There are a few people here who run the Zex 55 shot with other mods (hi-flow cat/midpipe, CZ, Cat Back exhaust, etc.). There was a poster here running a 75 shot with no other mods.
RB Fr/Rr Sway Bars, RB Fr Sway Bar Endlinks, RB Springs, RB Spark Plug Wires, RB Oil Cooler Screens, RB REVi Air Intake with Ram Air Duct, Centerforce Clutch, MS Fr. Tower Shock Bar, MS Rr Strut Bar, Goodridge SS Brakelines. Hawk HPS Brake Pads, SR Motor. Flywheel, Agency Power Pullies, RP Super Cat, Stern 19" ST 2 Touring Wheels, Falken FK452 Tires, Axial Flow Short Shifter, JIC Titanium Exhaust, Kyokugen Alum. Lugs, PWR Alum. Radiator, Greddy Oil Pan, & more