Originally Posted by StephenB
Except STO went away
STO = T1 or GT2
STU may work. From the Super Touring Purpose on Philosophy in the GCR:
Super Touring Under (STU) vehicles are mid-level multi-purpose performance cars of 3.2 liters and under. Case-by-case approval of engines over 3.2 liters from “Pony Cars” or “American Iron” with stock camshaft lift at a heavier weight will be considered. No engines over 4 liters shall be allowed under any circumstances.
It would be worth sending a letter to the CRB if you were interested.
Terry
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