Cool, thanks for the replies. My truck is a project I picked up to restore as I drive. It is very rough. Has been sitting in a field for 9 years. It is all original except for the engine and transmission (250/car 3spd).
Check Rock Auto, huh? Ok, will do.
As for getting parts from a yard, I don't mind swapping in 73-up arms as long as I know they will fit.
I contemplated buying the stuff for a disc swap, but my ultimate goal is to do a 4X4 conversion. I just want to make it a reliable driver in the mean time. Now, if I got the disc conversion parts for dirt cheap, then that would be a different story.
Thanks for the help!