Have a look at this site..
http://www.wrsonline.de/pak3.htmlAll in German, but it`s pretty easy to understand the basics of the site.
It has the GALs, but I couldn`t find any schematics.. but there is some nice closeups of the top and bottom of a bare board. As long as it isn`t a multi-layer board, it`ll be a good starting point.
As for the memory board, it says it can take 64MB but apart from the GALs there`s nothing to work from.
Looks like a pretty interesting site (if yer into that kinda thing!), wish they published a bit more info though..
edit..
Found some illustrations of the layout of the Frak/2 memory board on their site..
http://www.wrsonline.de/fr2doku.html#K2.2
