It's a Showmaster that I'd picked up for pretty cheap a while back. When I got it there were two lipstick pickups in the neck and middle which sounded mince. So I managed to get hold of a couple of the mini versions of the Burns Tri-Sonics, which I'd been wanting to try for a while, to replace them. I'm keeping the cheapo GFS Retrotron in the bridge for now, since it sounds ok. It's really more of a standard humbucker in fancy clothing than a Filtertron replica though. But this was my first shot at soldering pickups or any modding at all really, so I'm pretty pleased with it.