Well I decided that since I'm putting new pins in the rear leaf springs, I might as well put new bushings in them too! Wasn't going to at first since the original bushings were steel, but they had enough wear for me to question them.
I previously got the new pins from LMC and they matched the original pins, so I ordered the new bushings from them thinking they'd match the old ones. Well I was wrong. But I blame myself for that since the bushings offered are for the 47-55 AD's and I just assumed they would work. Same I.D. and O.D. but just not long enough.
I didn't know the GM number for them, so it took me a while to finally find some. Thankfully Olds Obsolete had a set of NOS 1150039 that I quickly snatched up!
The old bushings needed some persuasion with a reciprocating saw to come out. I then made
one of these to install the new ones, it just needed a larger piece of pipe and larger washers to accommodate the larger bushings. And boom, 4 new brass bushings installed!