don't forget if your ef only has 2 injectors you need an injector relay box and need it wired in so all 4 injectors will work. you will need the conversion harness, i'm not sure if you can use the mounts from the ef motor on the z6 or if they will drop in. also a p28 ecu and if you are using a tranny off a z6 you would need a cable to hydro tranny kit or just use a cable si tranny if you can find one. i'll see if i can find a write up for you.