It seems ACAtune allows enabling up to 12.3MB of ram, 1MB for kickstart and the rest could be used by special software (my proposals: p96 driver with indivisionECS??? disk buffers???):
http://www.a1k.org/forum/showpost.php?p=560781&postcount=456It looks more or less easy to overclock to 25Mhz but it would require additional cooling. It's a pity it's not the 680ec020 25Mhz model but it's ok.
