New to Mopar

Question...will '73 "587" heads fit comfortably on a '69 273?

After reviewing some answers (thanks guys), looks like the "587" heads will not fit comfortably on a '69 273.

Obviously, I can't attempt to treat this '69 Dart with the original 273 / 904 with a noisy 7.25" like a '67 Nova. I have to make some real decisions here, with an attempt to wake up this 273. Engine is OK, however aged with it's 2V. I was hoping to pump the HP to somewhere near 300. May not happen with this small of engine. I can pull near 400 easy enough out of a 327, Mopar seems to have disposed of the 273 in place of the mighty 360. So, it looks like an engine swap is my only real alternative? Help!
Welcome to FABO You could build a 300 horse 273 but it's much easier to start out with a bigger engine. Magnum swaps are quite popular. Roller cam and better heads are a plus.