Interestingly, on his page he also has a link to Bomarc Services. If you scroll down the page at this link
http://www.bomarc.org/catalogsmenu.php
you will find schematics for more Mac logic boards and PSU's. Hmmm...1.50 a sheet, minimum order is $10, I may buy a bunch...I don't see any Quadra 700 on there, though (plenty of IIsi stuff)...