I did the auto to conversion from a TH350 to a Super T10 which couldn't hold my power to a TKO500. I probably would have saved money if I would have went direct to the TKO, I had to rebuild the Super T10 3x before I found the TKO. Parts for the T10 and the TKO that are the same: 1) Z-Bar setup for clutch 2) Adjusting Pin for Z-Bar 3) Springs for Z-Bar 4) Clutch pedal 5) Bellhousing (I used 621 at first) 6) 168 tooth flywheel 7) Ram clutch (nuked it on my first run, now using DFX from Centerforce) 8) Bronze Pilot Bearing 9) 4 Speed tunnel adapter (http://www.nastyz28.com/ubb/Forum12/HTML/007398.html) Now once this is all installed you can mate the trans to your car. For the back half (Super T10): 1) Turbo 400 yoke 2) If you don't have a TH350 you need a TH350 crossmember For the back half (TKO 500/600): 1) TKO Yoke 2) Shorten the drive shaft 3) TKO crossmember (I got mine from SST former Keisler engineering). There might be more but you get the drift. Also, as you can see there is not much more work for the 5speed vs the 4speed.