A bit more and I am finished.
Note that the SRT6 is not a Chrysler vehicle with an AMG engine dropped in. Basically the only thing 'Chrysler' about it is the body and wheels.

Seriously, stat racing? Check with the SRT engineers (as we have done on srtforums.com) and they will tell you that the hp/tq is the same, but they were forced to publicize lesser #s than the MB counterparts, which is fine.

But none of this matters. People are going to do what they want. Just like some guys put SRT6 badges on N/A Crossfires.
Such is life.

Edmunds
First Drive: 2005 Chrysler Crossfire SRT-6

So when the SRT group wanted to leave its mark on a Chrysler-branded vehicle, it turned to the AMG performance division of Mercedes-Benz. AMG has a reputation for creating Benzes that go like hell on the open road but go down easy in freeway gridlock and while motoring to the country club. You'll remember that Chrysler borrowed plenty of SLK-Class mechanicals to create the Crossfire coupe and roadster. With its elegant body and 215-horsepower V6, the Crossfire is a fine car with or without a top, but drop in an AMG drivetrain and you'd have something truly special.
So that's what SRT did. The group commissioned the use of the supercharged 3.2-liter V6 and sport-oriented five-speed automatic transmission found in the 2002-2004 SLK32 AMG.

Next, engineers went to work on the chassis. They increased the spring rates anywhere from 40 to 50 percent and tightened up the dampers 40 percent front and rear. The car's suspension tuning is even firmer than that of the SLK32, according to the SRT staff. Where wheels and tires are concerned, Chrysler couldn't really go much bigger, so the SRT-6 wears the same 225/40ZR18 and 255/35ZR19 meats as the regular Crossfire. The SRT team did, however, put on a lighter set of alloy wheels (18 inches in front, 19s in back) with a distinctive 15-spoke design.

We've never had any complaints about the standard Crossfire's brakes (which consistently allow the coupe to stop from 60 mph in under 120 feet), but Chrysler redoubled its efforts on the more powerful SRT-6, fitting the car with larger front rotors and double-piston calipers front and rear. Performance targets included a 60-to-0-mph stopping distance of no longer than 115 feet, as well as a sub-16-second time in what the SRT team calls its signature test — accelerate to 100 mph and then, without pausing, haul the car down to a stop.

Turn your thoughts to the SRT-6's performance credentials, though, and the price is easier to justify. For $45-50 grand, you're getting virtually the same package of power and handling as a 2004 SLK32 that stickers at $56,000 and is sold by dealers who aren't willing to offer much in the way of discounts. If you can live with so-so interior materials and ergonomics, the Crossfire SRT-6 could shape up to be quite a bargain.

Follow-Up Test: 2005 Chrysler Crossfire SRT-6

If you want to see where this car is definitely not lacking, just pop the hood. Under that futuristic engine shroud is the pride of the SRT-6 — a 330-horsepower supercharged V6 that comes this way courtesy of AMG.

Automobile Magazine
Chrysler Crossfire SRT-6 Preview & Specifications - Automobile Magazine

The SRT-6 shares an awful lot in common with the outgoing SLK32 AMG, other than just the engine and gearbox. The dual control arm front and multilink rear suspension are virtually identical, although they are tuned in this application, with firmer damping and much stiffer spring rates. (They have gone up from 303 pounds per inch front and 337 pounds per inch rear to 451 lb/in and 480 lb/in respectively on the coupe.) The brakes, too, have come in for attention, with vented discs all around (the stock car has solid rear rotors), bigger front discs, and dual piston calipers in place of single-piston items.

The upshot is a car with serious performance credentials. Chrysler claims 0 to 60 mph in about 5 seconds, 0-100-0 mph in less than 16 seconds, and 60 to 0 mph braking in about 115 feet.

2005 Chrysler Crossfire SRT-6 | 2005 Chrysler Crossfire Review at Automotive.com

Underhood, the 215-horsepower Mercedes 3.2-liter V-6 in the stock Crossfire is replaced by an AMG-built, 330-horsepower, supercharged version, which also makes 310 pound-feet of torque. The only available transmission is an M-B five-speed automatic that has TouchShift-oops, sorry, AutoStick-manual operation. The hand-me-down multilink rear and control-arm front suspensions have been heavily revised, with springs and dampers that are some 40 percent stiffer than the regular Crossfire's. The brakes, too, have been uprated, with twin-piston calipers replacing single-piston items; larger, 13.0-inch-diameter vented front discs; and vented rotors at the rear. The ESP skid-control system has been recalibrated to be less intrusive, although there is always an electronic safety net. The larger-diameter wheels are shod with aggressive Michelin Pilot Sport 225/40ZR-18 front and 255/35ZR-19 rear tires.

Car and Driver
Chrysler Crossfire SRT-6 - Auto Shows - Car and Driver

When is one man’s Chrysler another man’s Mercedes? When that Chrysler actually is a Mercedes. Based heavily on the SLK32 AMG Benz, the Chrysler SRT-6 coupe and roadster sport an AMG-built, 3.2-liter, 330-horsepower supercharged V-6 that delivers power to the rear wheels via a five-speed automatic with AutoStick manual control.

Popular Mechanics
PM.Zone 2004 Geneva International Motor Show - New Cars - Popular Mechanics

Among the models making their first appearance here in Geneva are the Crossfire SRT-6 and Crossfire Cabrio SRT-6. These are the first Chrysler-brand products badged SRT, a designation previously reserved for Dodge.
Using the help of Mercedes-Benz's AMG hot-rod division, the two Crossfire models will boast hand-built, supercharged 3.2-liter V6 engines

Lycos
Chrysler Crossfire: Chrysler Crossfire Srt-6

As the standard Chrysler Crossfire was derived from Mercedes SLK320, it can ... receive the same engine as the outgoing SLK32 AMG. This is the supercharged version of the 3.2 V6. It employs a very good helical type supercharger made by IHI. The aluminum supercharger is installed neatly into the V-valley thus takes virtually no extra space.