It looks like the original uses the non vented drive flanges. And don’t use those slot head screws get correct bolts.
I bought all new bolts for the new flanges. Nice SAE ones that will sit on the shelf while I use the second set of metrics for the new discs.
Pistons moved back in fine thankfully.
Are these the KAD flanges that should work?!?!
Very interesting info on the spacers - thanks everyone for your input! For right now I've got the old setup back on. Drove it for the first time in a few months today and am anxious to get the alignment done and hopefully use it on an event next month! Hoping the handling will be less scary now I've replaced the bad steering rack!