look for the obs lift thread, or anyone on here that has a lift, almost all of them have 6 inch lifts and 35's.
rough country sells their stuff cheaper, just always seems to be that way. They don't leave anything out that I know of, it gets the job done just the same, it's only a 5 or 5.5 inch drop, the rest of the 6 inches is cranking the bars. Most kits are that way though. Some are even less, like 4 inch drops and gotta crank 2 inches to make it 6.
That's why the dc 6.5 is so popualr it's a real 6.5 drop kit.
Some kits, tuff country I beleive and maybe others are knuckles kits and increase the track width, in other words stick the tires out further.