please help

i got a 1989 civic lx 4 door and im looking to replace the intake manifold.trying to get rid of that black oval box thing.i need someone to tell me which intake manifold would fit without any modifications.its a japanese motor.a d15.someone please help

do a search on here or google for a MPFI swap, you need a D16A6 (88/91 Si or EX) intake manifold, the injectors, injector wiring, fuel rail & hoses, injector resistor box, distributor, & ECU. There is some wiring involved but most MPFI write-ups show the wiring involved.