My is my best replacement option for my car. I have a 91 z28 with a 4bbl 383. About 500hp 450lbs of tourque. I know the t5 wont hold up. I want to keep to keep it a manual trans. Is a t56 my only option. The easiest to bolt in would really help.

 

You could have the T5 built w/ stronger internals (like G-Force)and it would be a direct swap. Or you could do the T56 swap, even a TKO swap, those might require slight modification. But if its already a manual then its gonna be easy. Its the auto to manual swap thats a PITA.

 

Where do i go to get stronger internals for the t5. I have always delt with automatic transmissions. How much would it cost? What are the torque ratings?

 

the g force internal gears will hold up to approx. 500hp/500ft lbs according to people on this site.
go to www.g-forcetransmissions.com this is their website most people say its about $1,000 to do the gear swaps however i don't know because i haven't done it only did research of what others have told me.