Marlin, the Sparky works pretty good. My buddy in Adrian has one for his '91 KX250 and has never had a prob. w/it. You have might have to make some alterations to it(the stock silencer) and maybe put a hose clamp or two on the joining end of the Sparky just for a little bit more security. Other than that, good stuff.
I haven't camped at the meadows, but I have ridden some of the Bull Gap trails. The A loop over near the Pink Store is awesome. There's a motorcylce only trail that get's pretty interesting (read: hairy). My friends and I had a blast there last year. I think we're going back up for Labor Day maybe.