Actually this superchager package version is still a 3.2 liter setup not a 3.8 liter.

To get the even the normal 330 supercharged power of the SRT6, you have to rebuild the engine with lower compression pistons, special rods and crankshaft, then you have to add the same supercharger with intercooler that AMG uses, after that you need to do the electronics. So to get it to 330 Horsepower would be about $16,000 to $18,000 per renntech. That is why renntech offers this 404 HP version instead.

It looks like it will actually be cheaper to buy a SRT6 rather than having them bore our engines out to a 3.8 liter, which really sucks.

-marc