I'd just buy an X pipe and install it yourself if you can or if you can't have him put it on. For that price I HIGHLY doubt he's using a mandrel bender. Most likely is doing crush bends which=nononono.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.