i got my zc apart with no problems and ill have the si(still in car)trans out this weekend.im going to do a write up on a si zc trans with a hf 5th. is this set up as good as everyone says? how different is it than the si?

 

ZC 1-2-3-4
HF 5
Si final

very quick revving, closed geared, with a high 5th for highway cruising. sounds good to me.