bustedHB

does anyone know if there is a difference between the underhood wiring in an SI and the wiring in an HF? I've had a "friend of a friend" say that the SI wiring is different than the HF wiring, and that the HF wiring can accept a B series with no modification, and the SI wiring needs some modification. The reason that I am asking is that several dpfi-mpfi swap pages I've seen say that the SI wiring is capable of receiving a B series (non vtec) motor with no problems. I really need some help pretty soon! Thanks in advance