Possible hidden highlander here:
http://www.ebay.com/itm/1972-Chevrol...1ZGQ9E&vxp=mtr
1 clue that kinda gives it away to me, however, all depends which parts were modified or replaced in black vs. parchment. i.e. note the parchment visors with black door panels - not correct, one isn't original. Only a SPID will prove my theory though...
Starting bid seems a bit pricey at $8k, but that's just to how it seems to me. Might be your dream truck!