twin turbo mustang transmission

[eminit]

hi everyone
I have a 1998 mustang gt with a twin turbo kit from hp perfomance. i have put a lot of work into the suspention, braking, safety,fuel system, and of course the engine. the last time it was on the dyno it put out 1027hp. I am now in the market for a tranny. I would like a T-56 6 speed. I was looking at D&D performance and they have a T-56 viper 650 lbs. ft. I was woundering if anyone had any other sugestions or know of some other company's that have a 6 speed that is more capabile? The reason i still would like a manuel vs. an automatic is because this is actualy a daily driven car and i find driving a manuel fun