Just an update for those of you still waiting.
I just finished Hot Rod's Drag Week with my Passon 5 speed. It was flawless on the strip and down the road. One of the best upgrades I have ever made with the car. It was so nice to actually pass people on the highway! Info on my car- 1972 Challenger 3880 lbs with me in it, Dana 4.10 gears, new for this year 505 stroker (carb all messed up for drag week! any body want a gen 1 holley dominator?) ran a best of 11.53 during the week dropping the clutch at 4400 at the line and shifting at 5800-6000. Of course I did all of the required break in per Jamie's instructions. This box was great, the best shifting trans that's ever been in the car