You have to remove the front axle assembly and remove the mounting brackets, then cut and weld them to lower the diff the 2". Here's one "write-up" on planet
http://forum.planetisuzoo.com/viewtopic.php?t=5136
And for a 35" tire you'll have to do some trimming. We got some 34's on my friends truck with very little trimming and perfect offset wheels, but they were 10.50's too so you'd want to look into what width you want too.
Here's another write-up
http://forum.planetisuzoo.com/viewto...ight=diff+drop
Some pics of how to modify the brackets
http://forum.planetisuzoo.com/viewto...ight=diff+drop
Also, not sure if you notice it much with your stock tires, but the higher yuo go on the stock rear control arms, the closer the front of the rear tire gets to your fender, it pulls the axle toward the front more without adjustable links. I know with my 33's and just the 912's you can tell that they sit further forward, not sure if the people with 35's have had to go to adjustable links or trim the rear fender but I would imagine it would sit pretty close to the front
Here is LittleBeast's truck with 912's and coil spacers on 33's
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