[CarolinaHD]

What Glove box inserts fit? Exclusive to C-60's or other models?
Rubber cab floor mat? " " " "
They're all the same but the big trucks have a slightly different low transmission hump. They do not make c60 specific floor mats from what I can find. Hopefully pavement-pounder willblet us know how well it fits.

Outside door handles? " " " "
Same 68-72

Heater resistor?
Same

Front fender side marker lights? " " " "
Same

What is the best place to get these type of parts?
Ebay, rockauto, good used OEM parts, Carolina classic truck.
Also check out some of the vendors here instead of brothers or lmc. I've never been impressed with anything I bought from those 2 places.

How about a new wiring harness for under dash? Ron Francis Wiring or does someone have another they had great luck with?

Never heard of him but after looking through his website he looks legit. Most members use painless wiring kits.