i no you said that you aren't gonna lift but i figured i'd show you a pic anyway to use as a gauge... 35's w/ 20's and 4.5" lift...
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'01 5.9 2500 24v 6spd, Bone stock!!!
'07 5.9 2500 Auto, 4" straight pipe, Injen intake, Smarty, 5" lift on 35's w/ 20's
GONE 