mine's wrapped, too. mostly out of necessity. i spun the jug around so the exhaust comes out the back and without the wrap it's great for melting drumsticks...
that first ride sure is stinky when all that crap is burning off (the fiberglass wrap, not my leg
Nashville Kat, just google "header wrap." it's like 15-20 bucks a roll, comes in a few colors, and is available at a good auto parts place, or online.