I finally found some dimensions I can check, assuming, per Fibonachu, the geometry of most Mustang II systems should be the same. Upper control arm pivot points are 29-1/2 side to side, and lowers are 22-1/4.
So, splitting the difference of 7-1/4 is 3-5/8, thus my upper should be 3-5/8 farther out than the lower. Also, with the lower parallel to the ground, I'm looking for 9-1/2 inches between the lower and upper control arm at the mid point of the upper. Hopefully, that will get my ball joints better oriented. It will no doubt require shorter springs and getting rid of the drop spindles. Fingers crossed! Now to figure out if any of my spring compressors will work or if I have to cobble something together.

Craig