What you have there is a 1962 Pontiac Tempest, home to either a 195ci OHV four-cylinder or the famous aluminum 215ci V8 which Rover bought to use in their cars including the Morgan Plus 8, Triumph TR8, and MGB GTV8.
It's a good potential project, but expect to do a lot of work to take that and turn it into this (except with a hardtop)