SHELBY GT 350 Member
Joined: Oct 2010
Location: Desert Southwest
Hmmm...If it's cosmetic mod's you're looking for, you might consider a GT500 rear diffuser (aka bumper cover), a larger rear wing, smoked tail light covers, a new hood, or a new fascia. Some of these mod's really cost some bucks, but they're all worth it.
I think your Pony looks pretty good already. Do you have a tune and a CAI? If not, then DEFINITELY get a tune! Be sure to research the in's and out's of loading/unloading them when you take it in for servicing.