to get superdrive support from what i have been told by others on this forum, is a 2 part thing.

rom + swim chip.

if you need to me to solder on a rom simm, so you can use a IIx - IIfx - se/30 rom I can do that for you.. for a charge.. i just did it to mine, i am running a SE/30 stock rom in my Mac II.

Its pretty cool.