bmorgan has read my mind. imagine a srt6 engine without the supercharger and just a core. 4.3 amg > 3.2 amg. scharged 4.3amg > scharged 3.2 amg. I just want any AMG engine that i can find. Something that can withstand boost. i have a deal on a 4.3, so im tryin to make it work. and as for the ecu, im hoping to get it and the engine wiring harness all still in place and still attached. Lets say Im being forced to do this, what do I do about the different ecu and oil system?