Chucky has made a custom board/PCB design he calls Re-Amiga 1200 which is based on the Amiga 1200 Rev 1D.4 motherboard.
Besides selling the unpopulated (empty) boards he also shares the design files if you want to make your own.
EAB forum thread: http://eab.abime.net/showthread.php?t=93836
Help with component location: http://www.hertell.nu/locator/locator.php?project=r1200
NEWS SOURCE: Introducing the Re-Amiga 1200 (via) EurAsia