Hello, from Metro Detroit!

Semi-retired guy about to turn 65 and looking to play with Ma Mopar toys. I am the son of a Chrysler designer (from the Exner years). I cannot afford a ForwardLook car, but that's okay. I like 'em all, from A, B, D, FMJ and even (gasp) K-cars/P bodies. Which of these platforms has the best parts availability? Can y1ou find late model A body parts off the shelf generally? I'd like a later A, but am a bit wary of long hunts for parts as the car I get will be my grocery and short errands ride. Thanks for any input!