I am not fond of drum brakes.  Especially when having to remove to pull axles.  Anyone know of an upgrade that would fit a 2001 Chvuki, 4dr auto, V6?

I also found a pretty good Youo Tube Lock-Right install  https://www.youtube.com/watch?v=zlHyMY8Etrs  in 4 parts.  I hope he did it right but looking at an actual differential beats the poor photos in the Right-Lock install booklet.

was cloudy and only 84 in Paradise on the Rio today

I don't know of any bolt on "junk yard" upgrades, but there are folks out in Australia who offer kits - you source the calipers & disks and they supply mounts.

In my experience the rear drums are generally effective and trouble free, unless you spend a lot of time in deep syrupy mud.

Try this guy for a kit
http://www.zukparts.com

Inquiry sent, also asked about a Warn  hub on back.