does your car have factory a/c? it appears to be part of heat/a/c behind the dash stuff? Lawrence
Peyote,
Look in the factory manual AC section. I was looking at my 64 manual yesterday and noticed that B-body AC cars had vacuum controls (like my 65 C-body), whereas A-body AC was an under-dash box. By 1966, they must have moved AC to the dash w/ similar vacuum controls. You can download the manual free on-line (recent post).
I'll take a wild stab at the two hanger bolts. I'll guess they supported something hanging under the dash. While we are focused on AC, I'll suggest the long thin AC vent that hung under the dash. At least it did in my 1969 Dart w/ factory AC.
the 2 middle bumper bolt brackets are for a 1995 Ford truck, v-8 auto ex cab, 2 tone, lt/dk blue. The far right piece is for a 2001 Kia lock mechanism, dr rear door.
This is usually the in depth answer I give the counter men at the national parts stores as they start asking questions about something as simple as a 1/2-20 lugnut, only I also add the tire pressure on the right rear tire and spare.
Really, the 2 middle pieces are bumper bolts for a late style truck. Either way, only the piece on the left appears to be a Mopar piece.