Help with a mystery?
 

Hi everyone.
Sorry to pester. Hoping this may be an interesting question for Chevy truck enthusiasts.

It is possible that one of you may be able to help solve a very old cold case murder in Montana. This is from 1985.
The reason I'm bringing this up is because of the truck the suspect drove was quite possibly a 1976 Chevy.
The details are within a the link below, and I'm hoping that someone may be able to say yay/nay on the details and the color possibilities.
There is a drawing of the possible truck in the link, and not completely sure how accurate all of the details are.
I know anything is possible. But what was standard back in they day? Who would use the "cattle catcher" on the front? What type of employment?
What possible camper shells?

Any details that someone knowledgeable in Chevy lore might know.

Thank you for any and all thoughts.
I wish you all the best.

https://www.montanarightnow.com/boze...843ea16c4.html