Right, but why pay a shop to deal with the actual broken bolts. Warranty that bitch, have the dealer deal with the mess, then whatever shop will have a cake job with new bolts to deal with. Sell brand new warrantied parts (if there are any). Dodge has a 5yr/100K mile Powertrain warranty. Those usually include manifolds.
Now I dont know this shop to really say, but as an assumption, most of these offroad shops typically only like to install brand new fancy shocks, roof-top tents, lighting ect. They typically dont mess with common-folk parts replacements, especially with customer provided parts (cuts their profits out).