I remember those rigs well a friend had one which he did a jump in mimicking that same movie. In those days shotguns were carried in window racks his went off in a dumbass incident so he drove around with a hole blasted out the side of it .one of the best trucks ever made were the 67-72 f-250 ford pickups,,built like a tank,but drank fuel,{back in those days fuel was .65 a gallon,,not a concern}you could make a entire honda with one of those 3/4" thick ford door hinges back in the day,,remember the old watermelon farmer movie, charles bronson,jumping the truck like dukes of hazard. now that was a real truck you will never see again.too bad they are almost all scrapped by now.