Doug,
So he's going to put a 318iS engine in it (which is what came out of the Redline car) .

So a 3.2 Evo engine with GT35 - . What about the VANOS etc - can the S8 control all that, or is the VANOS being scrapped?

He should go for the full Skyline conversion though, 'cos at least that engine is designed for turbo-ing and there are loads of bits available .