727 or 904

I run a MVB 727 behind my 64 dart small block, even when it was a built 273, now it is a nasty 416 stroker. It has a custom 2.89 low gear set and all the toys, about $4k in the trans + convertor.

Depends on your wallet and what you want and are doing with the car. Most folks a 904 with good parts is fine. :)