Here are some neat little original things...
Gas cap. I think these were painted body color from looking around at 1967 brochures. It certainly appears to be original paint. Do you agree?
The floor mat is in excellent condition. This appears to be a GM part number.
Definitely original belts.
The doors were re-sprayed, but this mirror appears to have the original paint. Body color arms and black mirrors seems to be what I see in brochures? Let me know if that sounds right.
Firewall chalk markings, I'm not an expert on these, but probably original?
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I live in California, but identify as a Texan 
"If a job's worth doing, it's worth doing well"
Survivor "
Lil’ Mint" (67 c10 40k mile light green original paint)
Project "
C10 Fever" (68 factory black 396 swb)
Project "
Little Sister" (70 c10 blue original paint refresh)
Project "
Blue Bomb" (70 c30 blue original paint refresh)
SOLD
Project "
Vitamin C" (71 c10 orange original paint refresh)
SOLD