I am looking to upgrade my transmission to a TH350 that can handle a mildly modified SB 350 or 383 with a Weiand 177 supercharger. For round numbers sake, I plan on making 450-500hp. Eventually I want to buiid a SB 350 or 383 but I want to posture my drivetrain to handle the upgrade. There are tons of forums on Super Chevy with Weiand reviews but I can't find info regarding transmission pairing. Any thoughts are appreciated.