CAM = special olympics? I've never heard that. It got a bad rap at first because at the National events the guys running AS with their C6 Z06's were faster than the guys in CAM-S running unlimited modded C6 Z06's, but that has all changed in the recent years.
I've raced the past few weekends in Ohio with the Akron Sports Car Club. I was 3rd in PAX at both events out of 137 and 105 cars. CAM cars raw timed the whole field at both events.
I would stick with a tw200 tire which will open up your class choices. I run the RT660, the past few years I was running RE-71's.
Here's a run from last weekend. I tagged the very last cone at the finish. Would have bumped me up to 2nd in PAX, and out of first by 3-tenths.
https://www.youtube.com/watch?v=4U5jPoeLKUQ