Emax

So I am fortunate enough to have an Emax I (that I upgraded to SE)
with a Rev C digital board.  However, I don't have the 28 pin SCSI
Boot ROM or the relevant PAL chip.  I believe that SCSI controller
isn't too hard to source since it was sort of common, but does anyone
have an idea of how to get the other chips or a dead Emax that has
these chips?  

Thanks,
Chase