It's "full width" of the vehicle. However, there is some confusion whether for "Jeeps" it only includes sheet metal or to the fenders. Since there is now only emissions inspections you're not going to fail for it. Chances of you getting stopped just for a stubby is slim to none. Although, a P.O.'s interpretation of "full width" can mean to the ends of the fenders if someone wanted to push it. If you want the stubby, get it. Never heard of anyone getting ticketed for a stubby. There's so much other b.s. going on out there, that type of citation is low on the priority list. Just don't use a cell phone or drive impaired while equipped with a stubby and you'll be fine.