I've got less than 20 miles on my new setup but I'll share.
98+ 4R70W case with 4R75 hard parts, preformance clutches, Lentech valve body with transbreak, dirty dog C6 style non lockup 3600 stall converter,
I couldn't ask for a better tranny so far. (it's my first real one)
Haven got on the dyno yet but we think it's 550 ish to the tires on 12psi
96 Mustang, 98 Teksid, Manly 11cc pistons, Manly H beam rods, 98v forged crank, ARP throughout, 01 C heads with a little exhaust porting, 98 cobra cams, 76mm PTK/custom turbo kit, ams boost controler, Snow stage 3 methanol injection, Rebuilt 4R75w controlled with a Quick1, Lentech valve body with transbrake, 3600 stall, bronze Volk TE-37 wheels and Micket Thompson's all the way around. Burns gas and rubber! Delta Force Tuned using Commando.