the torx size is either a t-10 or a t-15, cant remember which one for sure. and no a phillips head will not work, you will just end up either striping the screw or throwing the screw driver at someone.

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