Got lucky and found a set of nos shoes for my 52 3804 rear brakes,on ebay,last year,for a song.
Still in the GM box.
As I remember it,I was the only 1 bidding.
Anyway,gonna swap em out and then have a local shop reline my old cores.
25 bucks a shoe is an EXCELLANT price to pay for piece of mind
AND Stopping Power.
regards,
steve sr.