Reply to "alignment question... again"

Biggest help with your giant front tires is extra CASTER: tilt-back of the uprights toward the cabin. Easiest changed with economical offset poly a-arm bushings. For wide low profile radials, it should be at least 4-1/2 degrees which can be done with only changing the upper a-arm bushings. Stock maximum negative caster is 2-1/2 degrees and is the main source of speed-wobbles and hunting on crowned roads. Corvettes of the same vintage use 6 degrees... with power steering due to the extra steering wheel load.
For camber or tilt-IN at the tire's top, you might try about 1/1/2 degrees. More will allow higher speed cornering but will also rapidly wear the inside edges of the tires; how much camber you use sort of depends on your disposable income! You can tune the camber effect a little by varying air pressure so tire compliance compensates for the tire's higher lean angle. THis may help minimize wear.
Note that after changing both these alignment settings, you'll need to reset toe-in; I use 0.060" toe, as measured between the tires.