I just bought a new Performance Box from http://www.vboxusa.com/products-other.php#pb (same as the drift box but no drifting mode and cheaper $499) and just got back from a 60-130 run in my GT.
Mods are Accufab tune and exhaust. 2.7 Pulley goes on next week
60-100 3.9
60-130 7.9
For the sake of comparison, here are some 60-130 times for some fast production cars:
6.1 - Saleen S7 Twin Turbo
6.9 - Mosler MT900S
7.0 - Ferrari Enzo
7.3 - Porsche Carrera GT
8.9 - Mercedes SLR McLaren
9.1 - Porsche 993 RUF Turbo R (100 octane)
9.2 - Chevrolet Corvette C6 Z06
9.4 - Lamborghini Diablo VT 6.0
9.5 - Ferrari F430
10.9 - Lamborghini Gallardo
11.7 - Ferrari Challenge Stradale
12.1 - Lamborghini Murcielago
12.2 - Porsche 996 TT
Mods are Accufab tune and exhaust. 2.7 Pulley goes on next week
60-100 3.9
60-130 7.9

For the sake of comparison, here are some 60-130 times for some fast production cars:
6.1 - Saleen S7 Twin Turbo
6.9 - Mosler MT900S
7.0 - Ferrari Enzo
7.3 - Porsche Carrera GT
8.9 - Mercedes SLR McLaren
9.1 - Porsche 993 RUF Turbo R (100 octane)
9.2 - Chevrolet Corvette C6 Z06
9.4 - Lamborghini Diablo VT 6.0
9.5 - Ferrari F430
10.9 - Lamborghini Gallardo
11.7 - Ferrari Challenge Stradale
12.1 - Lamborghini Murcielago
12.2 - Porsche 996 TT