10 spline - same as stock T56, and tr3650 input shaft. Unless you're going to be racing the car at the drag strip a beefier input is of no use really, on a road course or autocross you won't be doing hard launches or anything (why I'm sticking to stock 10spline, plus its cheaper to not buy a new clutch hehe).
Thanks, but dude that sucks. I was looking at a rebuild kit from promotion and it includes a 26 spline input shaft. I really need the beefy spline because I do take the car to the track, and if I can launch it hard and get it to hook I am afraid the 10spline will break. I think I can just buy a new cluch disk and not a whole new clutch. Let me know what you think. I am open to any opinions.
I am taking monatary donations for a 6 speed swap.......
I just can't afford to do that right now. A complete rebuild from promotion is $1400 and they claim it will hold the power I am making. That is significantly cheaper than buying a new clutch, bell housing, shifter, and transmission.