We put a Monza 2+2 262.5 V8 in my best friend’s ‘62 Chevy panel van back in the late 80s. We worked it up a bit with a mild cam, aluminum intake and a Holley 4 bbl plus headers. It ran like a raped ape with the 4 spd manual gearbox behind it and 3.90 rear gear Posi. It sounded like a jet engine with the roller chain we put in it.