yeah it is the same as gutting the pre-cats if you do it you will need MIL eliminators too i also have a page for those though here is one how to on them

Pre-cat gutting

Mil eliminators



98.5 Black SE ATX S&B filter, SVT MAF, optimized SVT TB, mesh grille, removed orange reflectors, painted rear reflector, gutted pre-cats, optimized SVT LIM, 19lb injectors, resonator removed cant afford an svt but lookin for 1 in nc