Exhaust blues, need advice----

My build is HP 273 with stock exhaust manifolds. 1967 Notch Barracuda with 904. I took it to an exhaust shop for a dual exhaust setup on my stock manifolds and after two days of trying, the shop gave up and I brought the car home, out nothing from the shop but $180 for the car hauler both ways. He said it was the tightest bend job he has ever seen. I hear that TTI or perhaps Accurate may make headpipes for my application, I need 2" back to transmission crossmember prox. I need advice on what to do. look for another shop or try to source commercial ones. All input appreciated, TIA----------------DR--------------???