It's not BKP related but, Gibson 57 classic. I got them in my Les Paul and they are wonderful. 57 classic in the neck and 57 classic plus in the bridge. I have serial/parallel for both pick up's but I don't use it. If I didn't have it, I wouldn't miss it at all. I'm not sure if you've heard them or tried them but mine are in an Epiphone Les Paul Tribute Plus so if you can find one, try it. The neck pick up is great for getting nice blues solo especially when you put the tone on 1 and put the tone on 7 it's nice and bright again. It's really clear the tone has an impact. I find myself often playing just with the tone knob experimenting. The bridge has good out put. I can play thrash metal on it but it's not really the best. Not enough out put but it is fantastic for hard rock or classic metal. It's the guitar I go to when I play AC/DC or Iron Maiden. I really like these pick up's and to me they give me all the Les Paul tones that I hoped for. Big and ballsy but smooth and creamy when needed.