I did this upgrade last year. Was very easy and under $400 for the complete kit
You don't have to pull the axles
Make a huge difference in braking and no messing around with drums any more
Bought the kit from
Little Shop Manufacturing in tennesee
Great customer service
Here's the link for our trucks.
https://www.littleshopmfg.com/gm-71-...-brakes-5-lug/