727 rebuild stock/hp street
I always put in a bolt in sprag. Not necessary but I like doing that with the oil mod to ensure the sprag gets enough oil. A standard cheap but quality trans star kit comes with everything needed. Race applications or higher HP above 375hp you could upgrade to the Kolene steels and alto frictions. I usually put 9 or 12 springs in. With a 3.8 to 4.2 lever. When you up the line pressure with a shift kit get you and upgraded HD spring retainer for the rear kick down. Blocker rod and spring removed on the accumulator for firm shifts.
I recommend Tom Hands book. It makes it simple stupid for us simpletons and has pictures.
He was cool enough to sign mine he’s also a member here.
@VOETOM