73 to 72 or 71 parts interchange?

the gas tank can be bought for a 73,whats other parts are you trying to find new or used,i might can lead you in the right direction.I can tell you that no one is making front marker lenses for the grille,i been looking for a while myself,but decided to change the 73 front clip to a 71,so im gonna sale the 73 front end complete