5-speed swap

I'm not sure I'd be too worried about any of the ratings that the different companies throw out. For what it's worth, the T56's out there in Vipers are only rated at 450-550 and I just watched a stock one dyno 978 ft/lbs through it and the guy has been driving it that way for a while. Probably not good for the longevity, but it'll work fine if you don't beat the hell out of it daily I'd imagine.