I want a flashing image like those ads at the top of the screen on Yahoo etc, the ones like...
"YOU ARE TEH 100,000,000th PERSON TO ASK THIS QUESTION! THIS IS NOT A JOKE, YOU HAVE WON A NEW TOASTER OVEN!!1!"
Yeppers, definitely get after the search feature, anybody here can hook you up with instructions and keywords...we been lifting these trucks since 2000

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Dunno if you picked 17s for any particular reason, but you can use 16s...gives you just a little more sidewall. 17s are better for handling, not as good for sneaking around on the rocks, at least not until you get in to 37"+ tires. Many of us ran 285/75/16 tires on 16x8 rims for years, I've been running 315/75/16 (roughly 35x12.5) on 16x8s for three or four years now.
It'll look really nice once it's done. I have plenty of photos but they're not up since we recycled the photo gallery

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285/70/17 should fit, that's the largest you can go with that lift, and be aware it may still rub during turns in reverse and some turns with flex going forward. Just the nature of it...until you trim the wheel well, the largest tire which will fit at full compression in a turn is 265/75/16.
If you plan to go 4WD with this on anything relatively rough, you'll be much better off running the original rims with 255/85/16 tires...they'll fit better, less trimming required.
If you're going at speed across the desert, you can run the 33s...less need for compression in a turn.
Gas mileage on the highway stays about the same, in town it'll drop 1-2mpg depending on how you drive.
Make sure the truck is aligned using DJ's method. The high caster draws the tire away from the back of the wheel well.
-Sean