Wiring Harness question
 

Ok so i got the b16 swap and im getting a ecu soon. I have a 1993 cx hatch with a d16y8 swap with the cx wiring harness. Now would i have to modify the harness to get everything working with the swap? If i get a p30 or chipped p28 would i have to modify the harness with each one? I dont know if the guy i bought it from modified the harness to get the d16y8 in either, would that be a factor?