Does anyone know a phone number that I can call world products directly, I have been getting mixed reviews about their windsor jr heads. I need to know if my hedman shorty headers part # 88400 will fit on their heads? Some people say they do and some people say that they are like the gt40p heads and that you need a certain header to fit. I have gone through a catalog and it dosen't mention that they need a certain header. THanks any help would be greatly appreciated.