1972 C20 Restoration

[4n6mal]

In the process of doing my first restoration of my first truck I owned (89,000 miles). I stripped everything down to the last bolt and nut. Cab and bed are off the chassis. Removed and disassembled front and rear suspension, differential and chassis had everything degreased and bead blasted. Just got all the parts back from the powder coater and looks better than factory new. Now for the assembly. Waiting to receive seals and gaskets for the Eaton H052 differential to finish the assembly.
Looking for replacement parts for upper and lower ball bushings, control arm bushings and bushings for rear trailing arms (coil rear suspension).

Any recommendation for parts stores Napa, Auto Zone, Amazon etc. and brand of parts. I see there is a full range for cost of parts and wondering if there is much difference between manufactures. Eg. Upper Ball joint ranges from $15 (Dorman) - $45 (Moog). I not wanting to go cheap but at the same time not bust the bank. The finish paint will probably bust the bank.

I am have a bit of a struggle finding replacement bushings for the Rear Trailing arms. Suggestions.

Any suggestions on front and rear springs. Original springs had a heavy 11-1/2ft cab over camper. Looking for something that will give a smooth ride, not like the buck board ride when the camper was off the truck.

Are air bags vs springs worth it?

I have taken a ton of pictures during the disassembly of the truck because my memory is not as go as it once was and I needed something to refer back to what it looked like before I pulled things apart and will be posting them on this site shortly.

Any suggestions are appreciated

Thanks ahead of time

Mike