You can do a search here and on Inliners.org for T-5 numbers etc. My 46 has had 4 rear ends since I've owned it, stock,pass car torque tube, 3:90 open rear from a 57 pickup and now 3:08 ratio gears in a 66 pickup axle. If you can use 5 lug wheels there are many more rear ends to choose from. I think camaros and also S-10 4x4 pickups are about the width you could use. Best ratio I believe is near 3:50 with the T-5.
Also contact Buffalo Ent for a nifty adaptor plate to use with your stock bellhousing to the T-5 also this man knows every trick in the book on old chevs and swapping stuff. His ph (360)652-7684
