I have a mystery frame that I think might be a late Centurion, or possibly a higher-end bike made by the folks at Centurion. It's been stripped down except for a Tange Prestige II label, and a few spots of blue/pink pearl paint. The brake cable is routed through the top tube, and the rear dropouts are Shimano EF. In addition, the seatstays curl up around the seat lug--not something I've seen on too many frames. Here's the serial number (note how small the number is): N8S0043. According to what I've read so far, the serial number places the frame--if it is a Centurion--in the later months of 1988. Any help identifying this frame would be greatly appreciated!