K frame swap question

Do yourself a favor and leave the spool mounts on there. They are easier to find replacements for and they will last longer. Unless you want to drill and put a bolt through the biscuit type like I did then the best thing to do is stay with the spool type. If you insist on using the biscuit type then I would find a 72 earlier k member and then go get the front brakes off of an Aspen or Volare and use them for the disc BBP. I did it on my 73 Duster with 75 Aspen brakes. No problems.