Anyone that has a spare original Front bumper for my 1972 240z which allows bumper guards? I have the original bumper guards replated. Just need the front bumper.

I'm not sure a NOS unit is available anywhere.  If it were, it would be $$$.  You could find original ones and have them cleaned/replated, or use one of the aftermarket options.  Several vendors are now reproducing brand new ones, or fiberglass ones if you don't want/need the chrome.  Mine are painted black since I'm not fiscally resourceful.