At 1125 lbs, you should be able to build a good car without any Ti or carbon. Don't need to outlaw it because they won't gain a advantage. Rules need to be simple. Maybe you should use POWRI national rules with only the engine specs being different.

Already starting to see some pricey engine builds. Can spend a lot money without porting or Ti engine components. Hope I'm wrong but, don't think dangling the "low buck" carrot is going work in the near future. You can already see who has a stock long block and who doesn't. Cost will determine the growth of this class.