I have an EEPROM programmer, and a 29F010B that I don't have any use for. If the LCII ROMs are indeed 27C010 then 29F010B should be a drop-in replacement. Since
@jajan547 was kind enough to send me a missing SE/30 part for the cost of postage, I will pay it forward and make you the same offer. Just send me the ROM file that you want programmed to the chip.