I had built at a tranny shop a complete T5 tranny, using the guts from a camaro and the housing of an S10. I plan on using an electrical speedo unit. The tranny is now in the 3100 behind a 292. The corvette clutch is 11''.
If you need to change the rear end ratio check out this site:
smokemup:
http://www.smokemup.com/auto_math/mph_range2.php

Gooday
Caroline & Jim
& Lucinda our 3104
51-3100 inliner @ 4655
small wheel moves by fire and rod,
big wheel moves by the grace of god,
every time that wheel turns round,
bound to cover just a little more ground.