I’ve done quite a bit of research on all of this, and followed many of the same steps codyHTX has done. If all you want to do is level out the truck a little and slap on 275’s, then I would suggest 5100s with the fronts at .85 and call it a day until you are ready to redo the suspension. IF, you want a little more lift/meaner look, then you can go the same route as [MENTION=127657]codyHTX[/MENTION] and I both did, which is 5100s with front set at 1.75 and then add a 1 inch spacer to the rear suspension (and slap your new tires on there). The ride (mostly in the rear) suffers a bit from the spacers, but not horrifically bad, and you still have a bit of rake for loads, etc. At some point, I believe codyHTX and I will both revisit the suspension and replace the springs, etc. But the current set-up accomplished what we were looking for at a relatively inexpensive route. I’m still running stock-sized tires on Trail Ed rims (only NITTOs instead), but because of the spidertraxx spacers, they look pretty good all in all.
Search for some of my posts/replies... I have pics of my truck with 1.75 setting up front and no rear lift... and then 1.75 setting with 1 inch spacer lift. You should be able to see the difference even tho my pics are crappy iPhone images.