I’ve had a 1989 firebird T5 transmission kicking around my shop for about 6 years now. I bought it for my 55 Chevy at an auction for $20, and never got around to installing it in the car because I didn’t know how to deal with the electronic speedometer output...Since I bought my 67, I’ve been doing a little research, and came to find out that there’s gears in there, it’s just a matter of changing the output...well, my truck is a 283 /3 speed already, with a 3.73 posi rear axle, so it makes far more sense to put it in the truck...I installed bucket seats last weekend, this weekend it starts in earnest... clutch kit is ordered, I found a place to machine the flywheel, I should be good to go....wish me luck...