I came across a 59 El Camino with what looked like an original big block setup. It had the shorter fan shroud bolted to the original radiator engine was not a 348 but it was a more modern big block. Does anyone know what type of rear ends came in those trucks? The rear end that it had did not have any bolts on the back like the 10 or 12 bolts you see on other trucks. It did look a lot beefier and was somewhat oval shaped. Google was no help so I ask the experts.