[Pyrotechnic]

I would recommend a Muncie or Super T10 4 speed. For a 5 speed, the Tremec TKO is about the only thing that will handle the power. A T56 6 speed is about as good as it gets, but you will most likely need to mod the floor. Don't let the floor modding scare you though, you can remove a high tunnel from another truck and bolt it in.