Shouldn't need any other mods, the intake is pretty much a stand alone mod (meaning, nothing has to be done to prepare the engine for an upgraded intake)
Now, there is PLENTY of other stuff you CAN do!
1998 T-Red CSVT (1492 of 6535) Born on 5/30/97 KKM 4.6L TB with custom "Throttle Optimizer" Bassani Exhaust NP-Tuning Sniper Intake Pipe Fog Light Mod with 885's Clear Corners Stereo - Oh Yeah!