they come out surprisingly easily
a tiny 5 ton press
a big vise
threaded rod with sockets
or cut with a hack saw gently, the spring is so hard you won't really affect it if you reach it, you don't need to cut all the way through the bushing, 90% is good, then start hitting it with a hammer and a steel drift
i used a chisel to cut one out, i had a high quality 1/4 inch one that sliced it like butter
the bushings are standard sizes, don't buy special bushings for the truck at places like LMC or ClassicParts, they are way too expensive
go to McMaster Carr and find them for much less $ by size.
2868T192 High-Load Oil-Embedded SAE 863 Bronze Sleeve Bearing for 7/8" Shaft Diameter and 1" Housing ID, 1-1/2" Long
6381K561 Multipurpose SAE 660 Leaded Bronze Sleeve Bearing for 7/8" Shaft Diameter and 1-1/8" Housing ID, 2" Long
you can cut 2 bushing to make a longer one for the top of the shackle position
-s
