Avoid this business! I had over $1,100 in repairs done to my vehicles exhaust system, which included new exhaust manifolds, gaskets, studs, nuts, and exhaust pipe hangers. About 12 months later I discovered both exhaust manifolds, and even the connecting exhaust pipes were leaking exhaust. I called A-1 and they said, so sorry, but your 1-year warranty has just expired. I then took my vehicle to a Ford Dealership, and two other Mechanic Shops just to be sure, and they all confirmed the same, that nearly every nut and bolt that A-1 had worked on, was not tightened properly. All three shops indicated that if A-1 had done the job properly, the repairs should have lasted indefinitely. The end result is that I will have to pay someone else to do the work over again.