Maybe a 76-80 F body front end?
sold a complete set-up to a guy who put it under a 52 Cranbrook. He got the K frame with motor mounts mounting bolts and iso blocks, power disc brakes(complete)with master booster prop valve and brake pedal, power steering box pump and lines, adjustable suspension and a sway bar in a 4 bolt package for under $300. I threw in the steering column with keys Seemed pretty happy to me when he called me after installing it!