Re: emmisions fail
Depending on how much you failed by, I'd run your tank to pretty much empty and either stop by a performance shop or at least a good gas station and get the highest octane fuel possible that won't hurt your motor. You'd only need a couple gallons or so. Put that in there, drive a round a bit so the JEEP is good and warm, and go straight to the emissions shop. Heck, NAPA even sells this stuff now - a fuel additive that you drop in right before inspection.
Santa drives a JEEP