My car was a 68 Dart with 440.. but sorry thinking about it now I did have slightly grind some meat off on engine boss, but no pipe mods.. I really liked those headers the mounting flang was really thick no warp and leaks.. good luck..
thanks, i did a 440 into a 65 dart a few years ago and made fenderwell headers. that was tight so this time a 383 with good headers should be a breeze (fingers crossed).
neil.