i got a 91 one 4door civic and i need help cuz i dont really kno wat i need 2 get so i can make the swap.........i have the motor and wiring harnees and that all

 

well you should convert to obd1 while your at it so you will need:

the motor of course
keep your tranny
keep your axles
obd0-obd1 conversion harness
obd1 fuel injectors ( 92-95 ) and matching pigtails
4 wire o2 sensor
p28 ecu

now thats the cheapest way but what i would also do while the motor is out is:

get a y8 intake manifold
b16 tb and port match the manifold to it
get an si transmission
aftermarket clutch
lightweight flywheel

 

taxks tat helps a lot.............lets say im not trying 2 do it the cheap way