The information is more than seriously outdated; it was never correct. The ancient monolithic builds of Basilisk II only ran System 6.0.5 and later IIRC; there were plans to make it run previous versions, but the hardware support was never added -- instead, the project went through a re-design and System 7.0 on a Performa-series Mac was chosen as the lowest reference combination.
[edit] I just thought of something: has anyone attempted to install 6.0.8L on BII? I haven't, but the entire point of 6.0.8L was to make a version of 6 that's compatible with the Classic II -- which was also known as the Performa 200.
6.0.8L should run on the Classic, Classic II, LC 550 TV, Performa 200, Performa 275, Performa 550, Performa 560, Macintosh Portable (backlit), PowerBook 100, Macintosh LC, LC II, Performa 400, Performa 405, Performa 410 and Performa 430.
If someone doesn't get to it before me, I'm going to try and run 6.0.8L on BII; currently, I have a custom Classic build of Mini vMac I use for it.
https://github.com/cebix/macemu/blob/2e ... atches.cpp indicates that one of these hardware configs *should* work with the appropriate ROM and 6.0.8L.
But then, that patches file also references all hardware back to the 128k Mac, so YMMV.
[edit2] I've updated
https://docs.google.com/spreadsheets/d/ ... -Dk7QDyKPY to more clearly identify which ROMs are compatible with BII.