what 6 speed stick can i bolt up to a 350ci or 455ci?

 

The Tremec TKO 500 or 600 will bolt up with the correct bellhousing. Weir Hot Rod Products now sells a bellhousing to mate a T56 to a BOP pattern:



http://www.weirhotrodproducts.com/index.html

 

i need it to bolt up to an olds 350 or 455

 

What Joe Said.
Weir is who I was checking out for my T-56 to Olds 350 swap.

 

BOP is Buick/Olds/Pontiac (and Cadillac). These motors all use the same bellhousing bolt pattern, which is different from Chevy. The Tremec transmissions bolt to a stock BOP bellhousing. The T56 requires the custom Weir bellhousing. Your call. Neither way is very inexpensive. Expect to pay $2500-3500 for all the parts (including the trans).