Art Morrison uses Stans Headers - Auburn, WA
Here's a link.
http://www.stans-headers.com/
My Nomad which has a sbc - and a Jim Meyer Chassis uses Stans that were built for the Morrison 62 Corvette. I had fabbed up some tube changes on an old set I had - just tacked in some different bends. Took them down to Stans to see if he would bend the tubes in one piece for me... he looks at them a minute and says "wait here". He comes back with a "jigged set" (a tangle of small pieces cut and tacked) and says here - go try these... and of course they fit perfectly. Come to find out they were the model set built for Arts 62 project... my point is - that with all the headers they sell - this guy could just look at my mocked up mess - and he could recognize what I needed. That's amazing to me!