help me I am lacking the knowledge

perhaps you can tell me what must be done to put a 93 1.5 liter civic dx motor in to a 90 civic lx.Someone had emailed me & said I would have to use the tranny, intake & exhaust manifolds & mounts from the 90.
The guy I have working on it claims he cant do it because the 90 has duel pt. fuel injection & the 92 has 4 injectors.Can the fuel systems be swapped?

Thanks,
Mark