What would it take for me to convert my 67 camaro

Tranny which is a th350 to a six speed?

There's quite a bit that would need to be changed. (Everything from pedals to driveshaft) If you want a kit to do the whole thing (or just part of the kit), check this out:

Transmission swap (http://www.lateral-g.net/forums/showthread.php4?t=1231)

http://www.ddperformance.com/

Those guys make a reto-fitted T56 for our 1st gens. They're pricey, but all the work is done already except for the crossmember and hole in the floor :D

The easy way:
http://www.t56kit.com

Tyler