Mid-engined, 200 hp stock?? Whew, let's hope not. I think SCCA has a couple of times declined to class the last gen 300zx, so my hope is they understand the 325i was enough of a technology jump and ITS can't stand anymore.

Early 911s have been classed. I'm not a 911 guru; I can't tell you for certain which ones. This happened early this year. I suspect we may see some on track next.

Airpirate, you are king of the oddballs. Here's one for you: 1974-75 Jensen Healey. Light weight for class, and good hp/torque numbers stock. The Lotus 907 is a good race motor, with I be 160-180 hp easily obtainable in IT spec.