I am modifying my guitar and I have some questions. The first one is what type of pickup should I put in the middle? What I am thinking about doing is putting a p94 in between a Gibson 57 and 57+. But I do not know if I should use a bridge or neck position p94 or if this is even a good combination. Also, how much does it cost to "split" a humbucker so you can coil split it.