Front End Rebuild

71 Swinger 318 with Scarebird front disc kit
Im going to start piecing together my parts list for the front end rebuild.
I've decided on the QA1 upper(52303) and lower(52307) control arms. I have some torsion bars already. The other pieces I will order as a kit from PST.
My questions are:
1. Does this mean I cant run a sway bar without getting their K Frame?
Part #52307 is a direct fit for 1973-76 A-body. Will work on 1967-72 A-body with QA1 K-member and sway bar, and 1964-72 A-body without sway bar.

2.I think the QA1 uppers come with the larger ball joint. Do I use my stock spindles for the new QA1 uppers?