ECR and V8 cars

[JoshS]

I know ITE is regional and defined locally.

That's a true statement for any class that's not in the actual GCR, including ITE, ITO, ITU, etc. I'd be curious what those things mean for the SARRC. We don't have ITO or ITU out here, we do have ITE which is basically wide open rules. Literally, the only rules in ITE are: originally a "tub chassis" (understood to mean "not tube frame"), DOT tires, and IT-legal safety gear, otherwise, do whatever you want. There are some VERY fast cars in our version of ITE.

Is that what ITO/ITU are, except that there's an engine-size split? What is ITE in the places where ITO/ITU exist?