well to be very honest...the HZs are junk IMO. the some of the older jackson stock pups sound even better than these. Get a JB and get rid of thise HZs. u'll feel a lot better and so will your guitar.
HZ's are EMG's version of Duncan Designed, but they are still made in the EMG factory in Santa Rosa CA. They're just made cheaper. IMO the Duncan Designed 103B (Distortion) is better than any HZ.