I agree. We have put ECS' system on our 69 GTX vert and our 70 Chally vert. The fit was the best that I have ever installed. The details are exactly the same as what the factory was. I actually compared the system we removed that was on my Mom's Challenger vert and there was a night and day contradiction between what the OE factory pieces were and what this in-Accurate system was. Yes, it fit, but the bends were way off and we had a clearance issue with the torsion bar on the driver side. The ECS system had plenty of clearance on it and fit perfectly.

If you are looking to try to clean up your old h pipe, I would try soaking some rags or something in Evapo-rust and laying them on the pipe and then going over the pipe with some kind of metal polish to keep it from rusting again. Or have it recoated in some kind of plating.