68 c20 independant suspension questions

[TheTodd]

Good morning and Merry Xmas (2019).
I have a 68 c20 camper special and am looking to do a front independent suspension conversion...I'm not the handiest, however, I have friends that are and would help. I know I could buy one for ~5k but I'm looking to see if there is another year that I can swap with? I do want to upgrade to disc brakes as well and would like to keep the same hub caps (as the truck was bought brand new by my grandfather) if possible. The truck is stock minus the motor 396 w/light cam. If I'm missing something here please feel free to blast me, or if I am in the wrong area, please point me in the right way.
Thank you
Todd