If your UCA's don't have Moog K7103 offset bushings, I would strongly recommend installing them before putting the whole front end together. At least if you're planning on running radials. With non-offset bushings you'll have a hard time getting the positive caster specs you'll want for radial tires.
I’m not certain what’s installed. I’ll have to email Cass and ask. It doesn’t specify on the site which bushings come installed. I am running radials though.
Looks like you've got rubber LCA bushings, so make sure you don't fully torque the LCA pivot pins until the suspension is at ride height (or pretty close to it). Hopefully you have a press or other means to remove the old LCA bushings and shells.
I have a ball bearing press. I’m a little worried about removing the old bushings and shells without damaging the LCA too bad, but I know that in the end if I’m having too much trouble, I can take them to a local mechanic.
It looks like you've got poly strut rod bushings. I'm guessing this is because the 73+ rubber strut rod bushings are still unobtanium, I know I haven't seen anything actually shipping on that front. The issue with poly strut rod bushings is they're frequently not the right thickness, which can push the LCA back and further hamper your changes at getting decent positive caster numbers. You can see one solution here... Cutting strut rod bushings for correct geometry?