I just bought a used transmission out of a wrecked truck , my question is, is there anything I should do before/ while I have the trans out of my truck ?
If you're planning to do an aftermarket down pipe, do it while the trans is out. It'll save you alot of time.
Also you might think about heat blankets for the turbo and up pipes. Check out Turbo Performance In the candy store section on the main forum page. Levi has great products at nice prices. The blankets took care of my heat issues since the firewall insulation was toasted on my truck.