STU @ the Glen Double National?

[erlrich]

Read the GCR. It's a national class, came about a few years ago. Nothing to do with ITU (a regional class) except currently-legal '85-and-newer IT cars are allowed to compete as-is (but they're generally not competitive). - GA

And...I see they have now cleared up the little question about whether all IT cars would run in STU:

"GCR listed IT cars, 1985 and newer, under the current IT specifications. Cars shall compete as follows: 3000cc and below are eligible for STU. 3001cc and above are eligible for STO."

Yippie, my 3.8L ITR Camaro gets to race against WCGT Corvettes...guess that's one way to help ensure an IT car never gets to the podium at the Ruboffs.