Suspension/Steering compatibility issues?

[Jmclendon]

Hello all,
I'm looking at ordering a big ol' mess of parts for the old man's under-carriage.
The issue that I'm running into is it looks to me like LMC trucks only has upper ball joints for a 1/2 ton 61, whereas I've got a 3/4 ton.

The perplexing part is that they seem to have bottom ball joints for a 3/4 ton in my year?

34-1824 (upper)
34-1721 (lower)

I'm assuming the 1/2 ton wouldn't work?

Also, I'm having a bear of a time finding upper and lower control arm bushings (upper and lower inner) for the front end. I'm hoping it's just a case of me not using the appropriate terminology or not understanding the catalogue?

The last thing I'm chasing is a drag link. I've had a look through LMC and Classic Industries, but I'm coming up blank.

Everything else I seem to be able to find on either LMC or Classic Industries.... it's just these last couple of pieces that are driving me nuts.

[Jmclendon]

One other thing I forgot to mention, when we're talking the rear end, is a Trailing Arm the same as a control arm? And is a Panhard Rod the same as a tracking arm? The pictures look like what I'm expecting. But, the terminology is different.