It's about Headers

What are the best fitting full size headers for my 73 Dart Swinger w/318.. I had a hell of a time installing Patriot Huger header. Right side was a snap. Once I relocated the oil filter. The left side:banghead: I had to re-design, because of the steering box and starter.:violent1: What do I have to do to install full size headers on my Dart. If I bought a smaller starter would the tubes and collector clear the steering box??