Renesis swap info
 

So I'm looking to pickup a 6 port renesis with matching 6 speed and ecu from this jam engine place. Thing is its going I'm my Toyota pickup desert race truck. I need something light and around 250whp. I'm not new to fabrication or tuning as I built the highest horsepower stock bottom end gallant VR4 at 632whp @38PSi. Anyways my question is will I need to run the dash and interior harness as well as the cluster for it to run correctly or can I just run it with the engine harness and Ecm? If no one knows could someone lead me in the right direction. My other option would be to get a 13b s5 car and part what I need and do carb but I rather not go through all that hassle

the ECU in the Rx8 is on a CANBUS with the climate control, gauges, and the OBDII stuff. ideally someone has cracked the ECU enough to turn this stuff off, or at least the warning lights. if not i'm pretty sure it'll run without that stuff, it'll just have CEL's and stuff.

plan B is an aftermarket ecu.