Well, as far as I know there's only two 727 big block transmissions...Hemi & everything else, so you're 383 2bbl. trans is pretty solid in my opinion. There are a ton of "race" upgrades, but all I think you need is a transmission cooler....."maybe" a shift kit.

70 Roadrunner convt. street car 440+6, NOS, 4-spd, SS springs '96 Mustang GT convt. street car '04 4.6 SOHC, NOS, auto, lowered "Officer, that button is for short on-ramps"