Proof of your year is the VIN. CCL44AS - C=Chevy, C=2WD, L=350 4 BBL, 4= Heavy half ton, 4=Pick-up, A=1980 year, S=St. Louis assembly plant. Last six digits are the build sequence number.
Does anyone have a set of 1980 door speakers that they'd like to sell? Like the ones in this picture. I don't necessarily need the speakers. Just the shells. Color is not important as I can dye them to match my door panels.
I believe the fender mounted antenna was an option. It seems that if you had a camper or ladder rack etc. that hangs over the roof and windshield you would lose reception so GM made the option.
That pic in the brochure is a little off from the actual tool compartment. These things were notorious for rust which is why they probably quit making them after 75. The door had vent holes but no coating on the inside so they rusted out. The hinges would get rusty and make it hard to open...