Before Redline closed there was supposed to be 25-30 IMCAs there last year, and I believe the year before they had a pretty healthy field. I don't know where they all were, but that's what I heard from IMCA. For the record, I've got $2200 roughly in my IMCA motor, and my car is homebuilt. With the way the economy is, it seems you would want classes that the cars could be built in your garage, I guess it would depend on income in certain areas though too. Crates haven't caught on over here, I don't think penn can had very many(just hear/say), I never went there on a regular night.
Your right this is modified country here, but times I think are starting to change. I believe I just heard Fulton was dropping modifieds for next year. Modified car counts have been down, I know your talking about crates, but same type of car just with a lot cheaper motor.