I put these into a Chinese Les Paul copy and they sound absolutely amazing. I'm a big P90 fan, and these are somewhat similar to those, but with no single coil noise. They have just the right amount of bite with an overdrive pedal in front of a tube amp set for the edge of breakup. Very clear and very articulate pickups. I'm going to be very tempted to put these into another guitar just because they sound so good.The instructions said to wire the south start as hot and the north start as ground. This is certainly OK, but I added coil splitting, and this would use the slug side (rather than the screw side) on the single coil setting. For this reason, I used the north start as hot and the sound start as ground. It makes no difference for the full humbucker and works much better you add coil splitting.The only downside (and it's not the fault of the pickups) is that mounting them nice into a regular humbucker slot isn't completely straightforward. They come with adapter rings for soapbar P90 guitars, but you will need a humbucker-style trim ring with an insert to cover the extra space. I ended up custom making the insert on our CNC machine. Not a big deal, but it would be great if someone sold humbucker trim rings with smaller vertical openings to fit these mini-humbuckers.