i just bought my first car, civic 93' hb cx. It has mostly everything stock and i would like to change the engine cause it has that D15b8 engine in it and i want something decently fast but not troublesome. Wanted to put a b18c1 or a b18a1 which i can get here. Question is, what are all the things i need to put in the car so it can run with that motor? Appreciate any help i can get

 

you would need:

the entire engine, possibly transmission
Wiring harness, ecu,

bare minimum

 

Which wiring harness should i use? Can i use the stock one that mycar has? And ecu?