Control arms and rag joint/steering coupler

[Rangerman]

Found a nice 1979 Chevy SWB project truck for my son and need some pointers.

Ball joints are shot and so is the gear box and the rag joint/steering coupler.
I prefer NAPA Chassis parts, had to much junk from auto zone in past years.

1) What are some good options for complete upper and lower control arms?

I like the arms complete with ball joints/bushings. I dont really want to go the Autozone Dorman route and the NAPA lowers arms are on national backorder.

2) Whats a good steering coupler?

Only option I can find for a complete steering coupler is a Dorman. Any other options? I think our gear boxes are 32 spline. Dont want to rebuild it and mess with grinding out the brads and a universal repair kit.

2) When I remove the steering box, will the new coupler just slide out after its unbolted?

Thanks for any help.