Mike -
Been over the rules and think I can build one that would be multi-class, but need a few pointers for the process. A few inside pics would help. NASCAR bars on the right side ok, or does the door frame need to stay intact? How much of the dash needs to stay? What's the deal with the RX-7 brakes? What tires are folks running? Rules state that data collection can serve no other purpose; even a shift light and lap timing? Rules state that instrument cluster needs to stay; are folks adding gauges or using OEM?
Might be easier to just look at a few on Labor Day, but I'm sure I'll still have questions.