6.50 rules and rules to the other three classes can be found here:http://xtremeoutlawseries.com/
There should actually be quite a few cars that would fit perfectly into this class from CR. Come on out and give it a shot.
Would any of you guys be interested in running a 6.50 index class. I have a bunch of interest in it down South. This will be added to the 8.5, X275, and OLS classes. 6 events this year.