I've got a TH350 I'm gonna build to put behind my 396. It's nothing to extreme 425hp on motor. What transmission kit should I buy for the rebuild, and what parts should I order to change (bushings to bearings ect.)? This will be my first trans. build, but I have help from someone who knows how. I would love to just pay a pro. but I have two TH 350's that are bad one in my car and other in my truck, so I can't afford to have them both done. I figured this was a good time to learn to do it myself! Any hints or tips would be greatly appreciated!