If you've got much of a drop side exit will scrape alllll the time! It might be more cost effective to buy a pair of mufflers (Magnaflow, Dynomax, and Borla make straight-through mufflers that will work, with the inlet and outlet on the same side) and have an exhaust shop fab it up, that way they can ovalize the tubing to clear your subframes more effectively! Also, go with a V6 bumper - nobody likes empty cut outs!