65 c20 replacement rear end and disk brakes

[BHB-65c20]

#1 Trying to figure out what rear end I should get out of what truck to put in my c20. I want to go 5 or 6 lug, 5x5 or 6x5.5
Iv been looking at 1/2 ton rear ends with dums that are the right size. Not sure if there is a better option?

Side Note its a work truck that I have a 5.3 and looking for a 6speed not going to make crazy power so I don't need to go over the top on parts.
in Denver CO.

#2 Disk brake kit for the front 2.5" Drop Spindles. This is the kit I was looking at. Again if there is a better option let me know.
Also saw if I do this kit I need to get c10 lower arms. Anything els?

https://www.performanceonline.com/Di...r-5-and-6-lug/



Thanks for your help.
Branden