converting 2wd to a 4 x 4

[KyFarm]

Hi all
I am new here and need some information. I have begun the process of finding and buying what I have always wanted, a 69 - 72 c-10 which is what my father had when I was a child.

I however need a 4wd truck as I plan on using it as my farm/country truck.

I am having a great deal of trouble finding a 4 x 4 with power brakes and have recently been told that 69 and 70 K10s cannot have power disc brakes added to the axels. This is unfortunate as I was about ready to buy a beautiful 69 K-10, but non-power drums are not for me as I will need to occasionally pull a trailer or fertilizer buggy.

Here are my questions and thank-you for any help that you may have:

Does anybody make a front axel, disc brake kit that matches up to any 69-72 c-10 therefore converting a 2wd c-10 to a 4wd?

Also, is it possible to use a 71 or 72 front axel and disc brake assembly to bolt into any 69-72?

Any help on this topic is greatly appreciated and will look at any truck that fits this description within 2 hours of Louisville, KY