If you are looking for obscure FD parts, particularly New F-1 focusing screens, high-end lenses, and rare lens adapters (which cost more than camera bodies for the lenses to be adapted), kevincameras.com has a surprising horde of them. After too many years of looking around, I finally ordered the SK screen (Bright Laser Matte for long lenses/spot metering) from him for $135. The one I normally use is the SE screen (split image+microprism/spot metering), but now that I'm using the Canon almost exclusively for birds, the screen optimized for tele lenses makes more sense. I've also got the stock AE screen (split image+microprism/averaging), but almost never use it.