Disk brake conversion

[ChebyCheyenne]

Hi everyone

I just had a few questions concerning a disk brake conversion on my 1967 1/2 ton pickup. I dont really want do purchase a full conversion kit, i would rather buy some spindles that would fit on the existing parts so i could still use GM parts.
So, my question is, is there any GM spindles that will bolt onto my pickup, or is there a company that sells spindles that will bolt on that still uses GM parts?
I know that since i have 6 lug wheels, i will probably have to switch to 5 lug, which is fine by me. But i will need to know what i will have to do to convert the rear to 5 lug wheels.

thanks for the help,
matt