They won't install it because they want to make money selling you one of there's. A cat is a cat... exhaust tubing is exhaust tubing... any good shop should have a hydrolic machine that bends and flaresthe tubing. I go to a shop up here in brooksville that I swear by for exhaust, but LHT here on TR are well known for they're fabricating with turbos ect. Lmk if you need more help