ya those are BASIC guide lines to go by.
I have seen lots of them and they all differ.
Most of the time some cutting is required.
some get by on a 4" lift and 33's and some have no lift.
The wheels play a huge part in it .
Negitive or positive backspacing, how much backspacing etc.
type of springs.
It is realy a crap shoot.
My buddy had 33's and no lift and no trimming.
He went to 38x12.5 TSL's and a 2.5 lift and some trimming.
Ok he hacked the crap out of them LOL.
But hacked sounds tacky, it was nicely done and looks killer.
He also has a 14 bolt rear and D60 front so that adds a bit too.