Its not really, a T1 vette runs 1:32's and they are not allowed to even do much to them in touring classes. That was on the pro course, but that really only takes about 1.5 seconds off a lap.
A T2 Evo will run around 1.40 on the club course and around 1.38 on the pro course. keep in mind that is stock turbo, cat, 93 octane, stock ECU, No boost control, ect.