ok ok you got me....i posted a pic of a unobody elcamino..but the earlyerones in the sixties and early seventies WERE body on frame.
"1968-72 frames had two different wheelbases, a 116 and 112 inch wheelbase. Sedans , station wagons, and utilities like the El Camino used a 116 inch frame, and the frame is interchangeable, except that the sedan had non-boxed rails."
Much more better..