i jus got my complete 13bt engine and tranny. i am doin a NA to TII conversion. Its harder and more money than I thought. I am spendin like 4 grand on this. I had to buy a Airflow meter, intake, new intercooler cuzz mine was bent, Koyo radiator, and NipponDenso Fuel pump(thought mite as well go all da way instead of buying new stock parts. I still need the exhuast system and LSD rear end. if anyone can help me on dat Let me now. O yea, I have one question, I ordered a S5 TII engine, but how do I identify if it is a S4 or S5?

 

take off the flywheel see if it says n370 (s5) or n318 (s4) also alot of the parts are labeled n370 if its an s5. like the turbo manifold.

 

S4s have the knock sensor on the center iron. S5s have them on the rotor housing.