74mm Throttle Body, **Sold**
I have since put the stock one back in trying to figure out problems on the car, came down to the pedal assembly.
Crossfire Throttle Body SLK280 C280 W163 W203 R171 1131410125 1121410325 171019 | eBay

Rear Hub & Bearing,
Bought to replace mine because I had a few stripped threads, local shop was able to re-thread them saving me time and money but now I'm stuck with this, brand new and never installed.
Wheel Hub and Bearing Assembly REAR 831-54001 Mercedes-Benz SLK320 01-04 | eBay

2 Springs from my ground control kit, very shortly after buying the kit I ordered smaller and stiffer springs from Ground Control and they wouldn't take back these for any credit and now I have been holding onto them for almost a year, will consider any offer since I have no use for them now.
Eibach 9" Springs 0900.225.0800 | eBay

Willing to do any of it through pay-pal if preferred, Ebay is also fine.
Hoping to sell all of these soon.
Let me know !

 

Those are 2.25" diameter springs. In other words, rear springs.

Les

 

So what size should the front be then ?
I'm not sure of all of the original part numbers from their kit, When I installed the kit the front didn't sit right and they said they would send me different springs which is where these came from. The kit then sat at a right height but I ordered 1" shorter springs for the front to replace these.

 

You decode Eibach's part numbers like this:
0900 (length) 225 (diameter 2.25") 0900 (Lbs. per square inch to compress)
Yours are 9" x 2.25 x 800 lbs. If they were for the front they should be 0900.250.800 unless Ground Control has changed everything.
A couple of pics of my Eibach rear springs. The 0600.225.0900 are what came with my GC kit. The fronts are 0800.250.1200. The box picture is what's in my car as we speak.

Les

 

ChuK_138 and Doc Holliday tell me you are a road racer. I'm building an SRT6 to run in NASA ST2, in the central division, and I'd sure love to have the opportunity to pick your brain and shorten the learning curve. I bought JesseJames' old car and I have the interior stripped out and I hope to finish the roll cage this weekend. I want to be ready to sort it out in mid March at the National Corvette Museum track, and hopefully show some Corvettes what Crossfire tail lights look like. Any chance you could send me some pics of your car, including roll cage? I'll PM you with my phone number, and when you have nothing better to do, give me a call.
Thanks,