s5 motor in to a s4
 

I am buying a 10th ann. soon that needs a good amount of work done to it. It needs a new fender and hood and the engine has 150k on it. It already has RB turbo back exhaust and FCD on it. I was wondering if i would put a s5 motor in it what all would i need.

would i need:
the motor
ecu
wiring harnes.....?

All you really need is the S5 rotating assembly and then keep your front cover and mechanical OMP if you want or convert to the Electric OMP.

I was going ot get a s5 j spec just drop it in.

just make sure you get the harness, mass airflowsensor, ecu and some beer.. then your set.