I'm not really sure if you want Guylhems stuff, as it is incomplete. His ROM image although nice, has a few show-stopping problems, most notably circular simlinks that never got fixed. (He was attempting to fix the odd file structure of the default Sharp ROM.) His fast kernel also has a few problems, like the power button not working, and I think it also had some keyboard issues.
His work was never completed because of a near fatal car wreck that put him in the hospital for quite a while, as well as ruining his 6000.