I drilled a hole in the AC box to access the heater box screw inside - worked well. I just patched it with some plastic cut from a spray can cap
I was dubious about paying $200 shipped for some linear ball joints and a bit of threaded rod so I attempted to make my own. I sourced some ball joints and threaded rod for ~$40 total and put them together but the angle between the sway bar and the LCA that you see above was too great and there wasn't enough articulation in the joints to deal with it. Maybe it would work with stock LCAs. In any case, it was worth a shot (IMHO).
I also ordered those F150 endlinks, they should be here tomorrow. I'll give them a shot and if they don't work I can return them.