Hi - wondering what the general consensus is on the OER replacements for my 73 RS, for the grill surround (chrome?) and the bumper (endura)... I'm replacing most everything and have the old RS grille warming up in my garage right now. Mostly concerned about what brand is best/least amount of headaches (I'm sure they all need work), and if anyone has a link to an exploded diagram so I can be sure I am getting all of the parts I need? Thanks!