I had never heard of Royal Radiator before this time. I have a limo bus that going over one of the big humps out of a driveway at a restaurant and tagged the three inch exhaust pipe on the ground and it separated at a joint. I took it to another reputable shop I had done business with in the past to get repaired. They declined because their new shop was smaller and besides they didn't want to slide under and weld "on the ground". I had my own shop for 15 years and knew that was weak. So I inquired at a speed shop I knew and they recommended Royal Radiator. Ray the owner did not even hesitate! :-) His price was right on. I know that. I owned a shop. It is was without equivocation that I recommend his shop. Also, I had an AC problem and he fixed that too. Above and beyond service. I felt his honesty.