dude there's tons of first gen explorers (same as Navajo) on here, my 2 included. just search around a little you'll find heaps of pics n' stuff.
my personal preference, is no more than 4" of lift, 31" tires, custom bumpers front/rear, and a detroit locker in the rear.
here's my stock-height '93. the rear springs are in need of replacement so it's sagging a little in the back.. but you get the idea.. 31" tires.
i'm also working on building another first gen (a '91) which will be similar, except a 4 inch suspension lift (and supercharged 3.8, among other trick stuff)
you looking to fix it up for on-road or off-road driving?
I have my reason why i say no larger than 31's and no more than 4" lift. which i'll give if you're interested. of course not all agree with my philosophy. basically in a nutshell, more than 4" lift gives TTB geometry problems, body lifts are stupid, and tires larger than 31's won't fit in you're wheel, so they're going to rub and have other problems.. who wants a truck that can't stuff the tire? not me.