If your Ad doesn't get a suitable response here, you could try the following contact info. They might be interested in the 312 block & cranks etc.
John Mummert Y-Block, (a machine shop) 14368 Olde Hwy 80, suite C, El Cajon CA  @ 619 596- 0312.. (they're busy people, have your info organized). Or e- mail Henaults Enterprises in La Grange CA @  henaults@jps.net  & @ 209-852-2476  (specialises in Y-Blk parts)


Paul

I have 59 Ranchero with fresh motor and trans and a lot of Y parts I am going to have to get rid of in near feature the body has rust becaus I was taking care of mom for the last few years and it got away from  I live in the SF bayarea and would need to have thing pick up
I have g heads
cranks 2 motors one a 312,