Shorty headers??

I'm using them in a 69 Dart based brazilian Dodge, with a mini-starter. I'm not using the reductors that came with the headers, but did all tubes in 2,5" beginin in the header's exit - this caused a little pain to install them. I think they souds good, nice performance and I haven't any problem with ground clearence - very critical where I live. Thinking in buy another set to my Dart.