When the cars were newer, I always liked to use OEM-spec brands of replacement exhaust system parts. OEM quality, fit, and function.
Problem with local shops is that they CAN vary in the quality of the pipes they use AND there can also be variances in the person running the bending machine. Also, they'll maintain that welding everything is the best way to do it, providing they get the pipe bends right to start with. CLEARING all that needs to be cleared, hopefully. They might be proud of their work, but I ended up replacing almost all of it with the OEM-spec replacement parts, when possible. Just my experiences.
So, realize these things when shopping for a shop to do the work. Look at what others in your area have had done for them, too. Hopefully on stock passenger cars rather than street rods. More "tucking in in" is needed on the '60s+ systems due to floor pan configurations, wherewas a '30s body street rod might not be quite so much of a challenge in this respect.
Enjoy!
CBODY67