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!
Doing a exhaust mod will help. You'll have more air comin' in so it needs to be handled well comin' out. Just removing the res(can replace with hi-flow res) and replacing muffler with hi-flow will help and won't cost 2 much.
"Wow, that sank fast." "Yeah, like a rock." 96 Contour GL ATX 9mm Ford Racing Wires; 2 Resonators down, 1 to go;"Special airbox"; many mods planned Sony CD player: 50wattsx4;remote; Speakers=50 watt Pioneer 6x8s Ross Evans