Before I had a son, I had more time for this kind of thing. I designed a 4-layer circuit board and built almost 200 Beige G3 ROM modules so that folks with Rev. A ROMs could upgrade to Rev. B or C and have Slave IDE support.
And I thought Trash80 was hard-core
All that experimenting with the ROM chips also led to things like hacking the Kansas ROMs onto other members of the PowerSurge family (x500, x600). Interestingly, the Kansas ROMs will even work in the 7200.