While I'll agree with staying away from the big national exhaust chains for something custom/vintage, you also have to be very carefull with the local independent shops, too. Far too many of the out there that use the "I'm the small time local guy you can trust" bit to get away with doing sloppy work. We have a local shop that does this on a regular basis. I've seen them weld tailpipes to bumpers, and route them so close to the spare that the heat from the exhaust burned a hole through the tire.
