I think a built T-5 or a TKO 500 would work well for you. The TKO shifting problems are mostly in the 6500+ RPM range that the 4V modulars see. For a 2V modular or 5.0 based application it shouldn't be much of an issue. A T-56 might work for you if your torque curve is flat enough. If not you'll either want to change the 1st gear ratio or go with something like a 4.30 or 4.56 gear out back to make the most use of the T-56.
'99 SVT Cobra #2085 -- MAC Cat-Back, MAC O/R H, C&L Intake, Steeda UDPs, FRPP 4.10s, B&M Pro Ripper Shifter, UPR Clutch Quadrant/Adjuster, Hawk HPS Pads, Brembo Drilled/Slotted Rotors, Too Much Suspension Stuff to List, Custom Tuned by Tillman Speed -- 306 whp/301 wtq