Dave do you have any pics/info on your low scrub sla setup you had
A-Arms and K-member:
Wheel and Spindle:
I don't have any pictures handy of the final version. I ended up changing the upper a-arm spacing shown in that photo after folding it up like a cheap tent. I ended up wishing I had changed the lower arm spacing after folding it up like a cheap tent, totalling the car.
I re did the steering arms from what is shown for ackermann and also switched to .81 thick rotors for the same reason.
I don't know how Griggs worked through the stock spindle issues, but I'm sure they did it well. I like the Bartworks spindle, the tall part fixes a lot of fitment issues but makes low scrub tough to acheive.
It is very possibly to mix and match parts and make a nice system, but IMO one would want to plot all the points in Suspension Analyzer or WinGeo and make sure you aren't doing something crazy bad. When you get all the stuff in the computer, you wouldn't beleive how much 1/8" change in pickup location can change all sorts of stuff.
IMO, you also have to analyze if all the hassle is worth it or not. My SLA was a fun excercise and learning experience. The car was much better with it that without. But, the class I was in, CP, has been won several times by strut Mustangs on little tires....gotta wonder if it was worth all the time and money.