should i use a si tranny or zc tranny which is better
thanks

 

i would say the Si tranny. no need for different axles, or any ---- like that. if you blow the tranny you can get a Si very easily for cheap, you dont have to get it from an importer for an insane price.
i run a Si tranny, no reason for me to switch to a ZC. i have a turbo ZC too, 8psi, 171hp/148tq...