I don't know enough about the many cars out there to identify an overdog. But I have a few questions.
1. Weight: as raced, or listed curb weight of the stock car?
2. I'd allow something to add right front camber. Most cars have struts, so maybe limit it to slotting the strut tower. For a-arm cars, did they typically have enough adjustment to get a lot of camber?
3. I have concerns about the tire rule for racing on pavement. Big heavy cars on asphalt with hard tires will quickly lead to overheating and tire destruction, imo.
4. What if the factory tire size is a 235/45/17 front and 255/40/17 rear, like the BMW 540 that is a listed suggestion? Not an eligible car? If yes, you need to clarify the eligibility. If no, you need to clarify the wheel/tire rule to allow non-OEM sizes.
Thanks for Your effort. On the whole, I agree that it's time to bring racing into the next decade.