Originally Posted by Red__Zed

There's really not much that can be done with the trans. A lot of guys that built their for drag swapped the trans out for something different. I ran the car with the AP2 trans for the most part, although I briefly tried out a dogbox. I think the guy that bought it from me actually wound up blowing the AP2 trans, though I never really had any issues, provided I was careful with shifting. I think a cryo treated AP2 trans would hold up pretty well.

The diff is pretty easy. There's a guy now that will reinforce the casing and cryo treat the gears pretty inexpensively. I actually had the diff from a 300ZX twin turbo mounted up on my build.

Realistically, it's never going to be as reliable as something off the showroom floor though. I spent most evenings tightening bolts and making sure everything was working right-- things most people don't really want to do with their cars. I didn't have the time to play with it anymore, which is how I would up with the Z.