The movie “Bonnie & Clyde” is on my favorites list.
I recall they liked Fords due to the V8. I also recall the flat head Ford V8 still on the streets when I was a kid. They had a huge drawback, that if ever overheated the block would crack. They were known for their durability in hot rodding. Chevy sixes would throw rods very easy if over rev’d. I know because I threw the rod on a 50 Chevy once.
Flatheads were strong, cheaper to build, and quiet. They died away when highly leaded gas became widespread after WWII.
Unfortunately, the Ford flathead was prone to overheating, loss of compression, and burning oil. My hubby’s great-grandfather had one. He used to take our oldest kids for rides in it, until he died 3 years ago. My father gave it to a museum.