6-lug Budget Disc Brake Conversion

[TypeSL2]

I have a '64 with 4 wheel, no power drums that I would like to convert to at least a front disc/rear drum/power brakes setup. Trick is that I would like to keep my 6 lug so I don't have to switch wheels. I like the wheels and tires currently on the truck and don't want to have to spend money on new wheels if I don't have to. Are there any off the shelf parts from other trucks that will fit my needs? I am not necessarily meaning the conversion kits that can be had from LMC or other retailers like that. I am more referring to stuff that I can get cheap from the local parts house to piece together my own kit. Thanks in advance.

James