:I'm in solo, street prepared class and was given a hard time for a couple things. The rule book says mildly modified and they gave me a hard time for my boost controller. cant have this. not in a class you'd be competetive in [ http://www.moutons.org/sccasolo/Rules/sp.html ]
They also mentioned a roll bar and fire extinguisher. I didn't think street prepared class was that strict. I'm planning to go again sometime this year and they actually gave me a hard time last year but I'm making sure I don't have any problems this year. They never said anything except that one time and I've gone numerous times last year. Maybe they're getting strict now. if you are competitive in your class, and placing often, they will start to even the field out. They will look for rule violations.