Here are TTA-TTF cars approved since the most recent Rules release (v7.1)( 11-20-09):
Alfa Romeo 164 ('88-'97)(FWD)---TTF** 3480 lbs
BMW M3 (E90, E92, E93)('08-'10)---TTB** 3625 lbs
BMW MINI Clubman S ('08-'10)---TTE* 2800 lbs
Ford Probe GT ('89-'97)---TTF* 2875 lbs
Hyundai Genesis Coupe 2.0L Turbo ('10)---TTD* 3300 lbs
Mazda Mazdaspeed3 (turbo)('10)---TTD* 3215 lbs
Nissan NX2000---TTF 2520 lbs
Nissan Sentra SE-R 2.5L ('02-'06)---TTF* 2800 lbs
Volvo 850 T-5R ('95), R ('96-'97)---TTE* 3240 lbs
VW Golf 2.0L TDI ('10)---TTG** 3000 lbs