The "real" Cal tried to sell me a brand new Ford pickup when I was stationed out there, WITHOUT a rear bumper. Said that was an "option" that I'd have to pay extra for. I told him to go rub his elephant.
My stepfather bought a Ford PU from the dealer in those days. The rear bumper was indeed Optional... and you had a choice: none, diamondplate, chrome, etc. Dodge was the same. No experience w/ Chev GMC FWIW.
I surely would hate to have to feed two J-79s unless I was a billionaire. Plus routine maintenance and parts would eat your lunch.
"Neighbor kids pissin' ya off? Neighbor dog $h!ttin' yur yard? We gonna fix 'em up!" That's fighter pilot gold, right there!