I did the swap 9 years ago,it was pretty basic stuff.I cut off the pressed on cable stop on the stock 80 Chevy 12 bolt cables,the free end not the brake shoe end,shortened the cable casings with a chop saw,feed the cable back in.The reworked cables fit into the stock 51 Chevy cable supports.Then hooked the cut end of the brake cable to a hardware store clevis attaching the cable to the 51 emergency brake cross arm.The clevises have a short length of threaded rod and using u-bolt cable clamps to secure the rod to the brake cable to make a slip proof conection.
