New guys front end ?'s

[Danny Grizzelle]

Ok folks, new C10 owner here. Jeep guy getting into C10's.
I bought a fame a few weeks ago and started taking things off getting it prepped for media blaster. Noticed the front end had been swapped out. The numbers on the frame says it's a '67 but the front looks newer, disc brakes and not as rusty as the rest of the frame. I noticed that whoever did the front put about an inch of shims on the upper A arm shaft. My question is, I'd like to replace all that stuff on the front, are that many shims needed or common? Looks kinda jacked up. I'd like to clean the upper and lower arms,replace the ball joints and replace all the shafts, if needed.