Wilwood disc brake kit for mopar A body but using B body spindles
Ha of course that is the one thing I missed. I guess I shall sell this kit and buy the right kit huh? It looks like that kit above is out of stock but I’m sure I can go ahead and buy the cross/drilled rotor brake kit that is in stock
PLYMOUTH DUSTER Wilwood Disc Brakes 140-15465-D Wilwood Dynalite Pro Series Front Disc Brake Kits with SRP Rotors | Summit Racing
Just make darn sure you know what you've got for spindles before you order anything else.
You say you've got "'70s B body spindles", but make sure you know what year they are. '70-'72 spindles look nearly identical to the '73-later spindle, but the inner bearing diameter is different- and that kit won't work.
Honestly, I think your best bet would be to get the Stage 2 kit from Doctor Diff- all factory-based parts that were designed to work together, includes the spindles (knuckles), larger rotors than the Wilwood kit, and service parts are available at any parts store. No waiting 2 weeks for proprietary brake pads.
And at $600, it's almost half the cost of the Wilwood kit. One of the best bargains you'll find for an A body, and stellar customer service to boot.
Mopar 11.75" Front Disc Brake Kit (Stage 2)
And guess what else? This kit will work with your QA1 ucas, too; as it uses the large upper ball joint.
