"Inferior" was a poor choice of wording. According to Rob the original material had a price increase and the new material made it possible for 2 less welds to be needed. Rob took the time to explain it to me as I was going to do dyno testing with the headers. That would require the car being strapped down 3 separate times. As it now sits, with just the headers added and finally with the complete exhaust system installed, which I have already purchased.
Rob found the new material to be more cost effective and less welds is always 2 less places for leake to develop. All is well between Rob and I so if I offended anyone I apologize. This should be worked out between the parties involved as they have been between Rob and I, not aired out in a forum Peace brothers! Sweet