Thanks all that replied. I thought they may be the same as the Panduit tie wrap that was used on the '69 mustang tail lamp harness at the base of the inner fender, which I believe Dead Nuts offers.
Bob, the newer version of the tie wrap isn't the same, however the older ones were more of a off white/cream color, the newer nylon style are usually stark white.
As for the aluminum straps, they were used on the heater hoses, and were in good condition, so there they will be returned.
-Keith