Here is where I was on the front suspension. I-beam lower control arm parallel to the ground, transverse leaf spring just above that, and jag spindles.
The original plan when I started this build was somewhat parallel upper arm that attaches to the top of the frame rail.
I'm not really feeling it. It takes away from the swoop.
Attaching to the side of the frame helps a little.
The "way out there" alternative is the miller-ish, air-foil idea. Make a swoopy tube a-arm and shroud it in sheetmetal. The idea is to go under/around the frame rail with the upper arm. mounting point would be on the back side of the frame rail, up high. .....squint real hard and you might see it.