DIY disk brake ?'s

I'd say there is a bit of an odd mix of skimping and splurging there. I'd pass on the exotic drop spindles - F/M/J body spindles work fine if you can't find a set of '73-'76 A body disc spindles, and use the money saved to get a somewhat better quality master cylinder and calipers. Cardone isn't exactly the best quality remanufacturer.