It's true I'm not a purest but I do appreciate the work on these old trucks, it takes a lot to keep a 60 or 70 year old vehicle on the road. I had a lot of influence from Hot Rodders and Drag racing when I grew up and that has carried over to my projects. To me if you don't enjoy driving the old truck because it rides rough or brakes hard or won't keep up with traffic you can change somethings to make it better.
Back to the headers, i found these on Speedway, what I like is that they don't hang to low. https://www.speedwaymotors.com/Small-Block-Chevy-Clipster-Headers-Stainless,60503.html