Hey guys.. i got a 90 hb hf bone stock (in the motor) is been true my mind to get a swap for a b16 or B18a, but i'm afraid to mess up my car, i have done in my old 93 si the swap for a GSR but the harness was the same.. what would you do in this case?? what i have to do to get the swap and the most important think.. keep my a/c running..

thanks for the help in advance..