As far as lift kits, there are a few companies that sale them. Skyjacker, Superlift, Rough Country, Tuff Country, Rancho, Fabtech.

Most offer a replacement set of front leaf springs and block for the rear. Or you can get a set of springs for the rear too, but most still use the OEM block.

Difficultly level all depends on your mechanical skills. A place to do it and tools makes it not so bad, IMO.

Depending on the amount of lift, will drive the need for things like longer shocks, soft brake lines, drop pitman arm, adjustable steering link, longer d/s.