i recently bought a 01 z28 these are the mods i know of.stock air intake with k&n filter,stock throtle body,ls6 intake,Afr cylinder heads, comp cam 232/236 duration at.050 .595/.601 lift,112lsa,bosch 28# injectors,kooks long tube 1.75"kooks custom y pipe,kooks custom cats,borla cat bach,walbro 255 liter/hr fuel pump.rockland t-56,3.5 custom drive shaft,and dts 12 bolt.i got a wideband dyno sheet with the car showing 448rwhp and 455 torque.my question is this. does it seem like its lacking on fuel as far as injector size or throttle body. would i gain hp from injector and throttle body upgrade any feedback would be great thanks guys!!