Compatible with 66 step side

[LuckyRabbit4]

I’ve got a 66 C10 long bed step side. I’ve been trying to update parts as I go with other models but I have a hard time finding what bolts up to this. For example, years that fit power steering, suspension to convert to calipers front and back, brake system. Really anything that can be upgraded with other models when I can instead of buying new.

I’m putting an early 70s sbc 400 in there now and would like to update some things while the engine is out and I have space.

Also, I find 80-90s s10 all over the are that are now rollers but have fully bagged suspension and components that work. There’s no chance these would bolt up? These trucks go for $400-600 all day.
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