I chose the FatMan drop spindles to retain the geometry in the front suspension while lowering the car the 2 inches I wanted.
The Fatman spindles are a long way from ideal (but no alrernatives where available at the time I put it together). If I was doing this part again today I would go for the one-piece drop spindles from Magnum force even though are are cast, they are strong (the Fatman spindle is in effect made of 4 pieces - hardly ideal for important this component).
I may yet change these.
Anyway, I had to have custom caliper brackets made to fit the calipers as the whole setup is non-standard and a long way from any kit offered by Wilwood.