I would be getting a th400 tranny and a floor shift for it. I was kinda hoping that my stock rear would hold up to it for a while? If not then probably a 14 bolt semi-floater out of something newer. As far as brakes I was gonna run the stockers for now...but that is a lot of power to control so I would need to upgrade them eventually.
My main concern is that it would be really complicated to put a big block in the truck.