Whats the work on the GM front brake spindles?

The 73-73 Mopar units are getting expensive and hard to find. What can the members tell us about the GM parts that us GM calipers/pads?
I just installed a set a month or so ago
I bought the entire kit from scarebird, but you can save a few dollars by buying only the brackets from them and piecing it together

It stops way better then the drums did, and I would have spend as much in wheels and tires if I had "upgraded" to large bolt pattern