Hedman Elite ultra duty headers

Hi guys,
I am looking into a set of ceramic coated headers for my 440/auto 73 Challenger. I am looking at the Hedman Elite ultra duty. They are a thicker walled tube and I like the design of the tubes across the flange/ spark plug access and the ball type collector vs the TTI flat flange and cost less. Anybody have any experience with these? How is the fit? How is the starter access?
Thanks
Author: coyote42