VonNicko,
I used CPP (Classic Performance Products) kits to put 6 lug disks front and rear on my 65. They sell the 87 model heavier front spindles (Western), bigger bearings, bigger ball joints and tie rod ends and the adapter sleeves to connect with the early model inner tire rod ends. The rear used an 80's cadillac caliper with emergency brakes. Good kits. Fairly reasonable prices. Worked well for me.
http://www.classicperform.com/6092chevtrk.htm
TR