727 Trans Rebuild Reccomendations/Suggestions

Howdy guys! I've read a bunch of the topics posted here and It's pretty obvious that this is the place to get the information I need to do my tranny rebuild.

Here's the important information:

1968 Barracuda Convertible (3300-3400lbs)
1972 340 with performance rebuild (+400hp)
8-3/4 sure grip rear w/ 3:23 gears

My plan is to pull the trans and do a complete rebuild unless there is a way to tell if everything is kosher as is. I want to have the confidence in the car that I have in my others and this is one of the pieces in the puzzle that I am not sure of.

I love to cruise with the car but I drive it pretty hard. I'd like to steer away from a manual valve body but I am open to suggestions. You guys have any opinions? Suggestions? Good stories? Beer? :drunken:

Thanks in advance.