318 barracuda dual exhaust

What size/diameter is the exhaust? If it’s 2.5” or 3” then it will be quite close to the torsion bar on the drivers side. Did you replace the starter motor with a mini starter motor? Depending on how the shop did the exhaust install, it could be difficult removing the full size starter down the road when it fails.

Depending on the exhaust kit and the skill of the shop, they might even need to dent the down pipe to clear the torsion bar.