Trannies are something that doesnt really need much discussion anyway. Nowadays there are ways and ways to build almost any auto tranny to do what you want. Even the vulnerable Ford AOD can be built to withstand 500HP. As for manuals, there are a ton of options to select from. Muncie, Bog Warner, even the GM 4 and 5 speeds can stand a lot. Its all a question of how much money do you have, how much torque are you pushing and who makes your motor