1950 chrylser rear drum
unless its a restored car,,i would consider a more modern rear axel,,from the 60 70 80,,,drums are easy to get,,new or used,,,guys on the P15/D24 site can tell you hwat would interchange,, i know its not mopar but the ford explorer 8.8 with rear disc brakes is a popular swap,,,many to choose from and plentyful in the yards and craigs list
