I have a 1965 mustang and its got a C4. I want to make it either a 4 or 5 speed, If I was to get a 4 speed I could probably find a borg warner t-10, but what if I wanted a 5 speed? What would work with the 289 mustang? tko 500? I dont know, thanks guys.

 

T-5, there are a ton of kits out there to do the conversion.