The question I had was the result of the use of Clifford headers. I bought some from a forum member a while back and I'm planning on installing them as soon as the weather gets warmer. I was on the Clifford web site looking for some collector couplings and noticed that their headers for the slant, reference "high starter and low starter." My headers are in storage. I plan on looking at them again this weekend. (when I bought them...I didn't ask)