Frcfedintegra

i have a 94 integra ls with a drag 3 manifold, t3/t4 turbo, rc 440 injectors, and a s-afc hac. just this morning my car started running funny. when im on the gas at a steady speed the car starts sputtering. when i give it gas after that it sputters for a second then breaks out of it and seems to run fine. i bought a new dist. cap and rotor button, but am having trouble finding the plugs. i have ngk r 3330's. any other plug i can run? also my air fuel seems to have changed acording to my apexi turbo timer. i used to run 14.5 at throttle and now its down near 10 and at deceleration i used to be at 20.0 now its at 14.6 what would cause that???? i need some help