I pulled this one back up because of the heater hose strap comments. Interesting enough, if you look at the 1966 Dodge Hemi Service supplement, there is a picture depicting how the heater hose should be routed and clearly includes hose straps. It is in group 0 page 2.

I have seen one owner 68 Hemi Chargers with those straps. Of course that might not mean anything, and Hemi cars where not A/C correct?