Rick:
SM2 (street mod 2) is a katie bar the door class for all highly modified 2 seat cars. They need to retain their street legal equipment, but not OEM stuff. They are limited to R spec tires, but about anything else goes. Your car would slot nicely in there
C-4 Vettes do quite well at AX also. They are nationally competive in several classes. There's a B Mod 65 Vette...noisy sumbitch... that is often TTOD localy....when he don't break.
Most guys (CA guys mostly) on this forum.....I haven't taken a poll....stick to PCA events for various reasons. You'll note that most of those responding to this thread are from outside CA. The PCA guys aren't exposed to the spectrum of cars that run SCCA and thus have mistaken impressions of many cars. Having said that, I can understand why guys don't want to run SCCA. It's production AX. 4-5 runs tops...*but only the first 3 count*. That tends to focus ones attention. The CA guys can run PCA all day & get lots of butt time.....but, it's a "small pond".
Our local SCCA events have between 100 & 175 cars show up......D sport racers to Yugos
and most of them are gearheads....no "I got a 100k car so my shit don't stink" types. The only thing that impressed these guys are the numbers that flash up on the timing display.