The C 10 has steel bushings. The 3/4 trailing arms have a steel reinforcement on them.
I have never looked under a c10 from this era, I assumed it being a lighter duty truck it would have rubber bushings. That's cool to know they have steel bushings too. That explains why the trailing arms I got as replacements years ago, don't have the reinforcement. There's a place in Fresno that sells heavy duty one piece construction trailing arms.
