Disc conversion questions

[joecarquest]

What to add disc brakes to my 1966 c20.
Found this thread

63-66 Crossmember Installed:
1) There are many advantage to leaving your 63-66 crossmember in place to add disc brakes.

2) 63-66 truck owners can now purchase "year specific" standard and drop spindles, from many aftermarket suspension vendors.
* No need to change ball joints.
* No need to change tie rod ends.
* These new "conversion disc brake spindles" are a true "bolt-on" mod to add disc brakes to your truck.

Summit racing has Classic Performance CP4S9 - Classic Performance Spindles disc conversion stock hight 1966 c20 year specific parts.
Been looking at threads so far haven't found anybody that has tried these or something simalar. Any info would be greatly appreciated.
Thanks