Thar reminds me of one I saw here in Kansas City. I was in a Goodyear Store getting an alignment and caught a picture of a Mach 1 that was similar to that one.
I asked the guy behind the counter about the car and he said it was his. Me" What engine are you running?"
Him "429 SCJ"
Me: "Oh, a Motorsport setup"
Him: "Nope, original 71."
Me: "Was the car in bad shape?"
Him: "Nope, it was very solid and original"
I got a sick feeling that someone would actually take an an original 429 4-Speed Mach 1 and cut it up like that. But he did.
Oh well, once you own a car it is yours to do what you want,