Yes, Bob had built headers for his duster. They did not quite fit my car and where tri-Y. Had change a couple tubes to make them work. Plus sense they were Tri-y the primary tubes did not have to be perfectly parallel to slide a 4/1 collector on the primaries. I bought the 4/1 collectors and had to make them fit. Along with some big alterations to make them work with my current exhaust.

This is probably going to be louder than what I wanted but, it is what I already had. If it does not work out I will get another set of collectors and do a X style exhaust. Just don't want to sink a lot of money into the small style exhaust when I plan to build a larger engine with larger exhaust later on.

Leon