I'm thinking about a b18c5 swap (obdII) into my 2000 ek hatch. What do I need to look out for. I hear you have to use a 2000 si engine harness... what else?

 

you dont have to use an SI harness it just happens that that will have all the wires you need but you will still have to modify it. you can use any of the harnesses but you will have to add wires to the others. you are going to need the drivers side motor mount and rear tranny mount from a 99/2k SI, you need axles & intermediate shaft for a teg, b-series shift linkage, and you will either have to modify or replace your throttle cable. Also the radiator hoses wont fit well on your stock radiator.