If you are wanting the tranny to stand up to some abuse (ie: bulletproof), buy a new Magnum T56. There are two main reasons I would suggest it, that being they can handle a lot more torque than the regular T56 and there are several positions you can put the shifter at to better fit your need. It is going to cost a little more than a Camaro tranny, but it will far outlast one. Just my 2 cents worth.