I think I may have answered my own question, but if I ever find a nice pushbar, I'd stick one on my 77, but right now it has the early style bumper and most pushbars that come up for sale are for 78/79s trucks/broncos. I may have to get a later style bumper if I find a pushbar.
C4TZ-17757-D .. Chrome Front Bumper-Use without horizontal bumper pads.
1964/77 F100/350, 1978 F100/350 before serial number AG0,001.
--------------------------------------------------------------------------- D3TZ-17757-A .. Chrome Front Bumper-Use with horizontal bumper pads.
1973/77 F100/350 Ranger XLT, 1978 F100/350 Ranger XLT & Lariat before serial number AG0,001.
============================================================== D8TZ-17757-A .. Chrome Front Bumper-Use without horizontal bumper pads.
1978 F100/350 from serial number AG0,001 & 1979 F100/350.
---------------------------------------------------------------------- D8TZ-17757-B .. Chrome Front Bumper-Use with horizontal bumper pads.
1978 F100/350 from serial number AG0,001 & 1979 F100/350.