How low can I take it?

Have a 76 D-100 I already lowered 2" up front, is there any way to go lower with out having any alignment issues? Any one ever move the upper control arms?

I've herd of using van control arms to lower pu's but not sure what's involved.

3
I know about the lower control arm swap, but I want to go lower than a 2" drop.

I got 3' out of mine
Dakota dropped spindles work too

Van arms or cut coils along with Dakota Drop Spindles.

I used van lca, dakota drop spindles, and cut one full coil from springs. Front frame rail sits 9 1/4" off the ground. LCA and crossmember are a little over 2" off ground.
I run 255/55/17 up front and 285/70/17 rear

Got any pics? Thats the tire size Im considering

far away.