Add a little, Renesis is using PCM that running on CANbus and REW is using traditional ECU. On the PCM, it control a lot of thing, like throttle position, power steering, ABS, DSC, and etc. In order to use back the items, you must use back the PCM. So, add a microtech on similar thing will be the solution. But that is if you have no problem with the irritation of CEL/MIL. Engine mounting is just a very simple mechanical add on. I would say the end result is just bring the REW forward about 5cm, as the sample from several transplanted RX8. When you can get the REW on, how much power you are gonna make it produce? 400? Then, other thing have to be concern, like Axle shaft, drive shaft, bushings, suspension, body flex and etc. So, end of the day, A car not like a car. Spending so much on mod but drive without peace of mind. Better to get a RX7 as compensate the RX8 as a race/drag car. On our weather, our fuel, and other element, 310whp on RX8 is the max. Anyway, how much is the REW halfcut nowadays?