1973 383 duster headers install

Or Schumacher's. Starting at 525. Will fit with no dinging. Or pro-parts if you don't care about the 2 small holes.

Just saying if you have to destroy a set of headers to get them in I don't see the point of doing it at all. Performance and looks suffer. The one guy has tubes 1/2 or more closed in.

IMO save up until you can get a set that works.