Very simple, but only if you have a tool to separate the ends from the steering arms. I've seen a tool that look like a fork that you drive between the rod end and the steering arm, but a pitman arm puller works great for this and will also be needed when you rebuild your steering box.
The driver's side of your truck likely sags due to the old springs. All of the old truck springs lose their arch over the years and since the driver is a load 100% of the time, they sag on that side more.
When you decide to buy springs, get them from St. Louis Spring. You'll find their number with a google search but there is no website. For my 55.1 it costed a little less than $400 for all 4 springs with bushings installed and with all u-bolts.
