Chrono trigger conversion

Hi I have a Japanese copy of chronic trigger that I would like to convert to USA copy.
I am trying to use this diagram
viewtopic.php?f=12&t=4877&start=45

I already have the parts but I am a little confused with the pinout.
It says that pin 2 of the 74ls139 is wired to A0 of the snes maskrom
Eepron A0 to snes pin 13
Eeprom A1 to snes pin 12
Eeprom A2 to snes pin 11
Eeprom A3 to snes pin 10
Eeprom A4 to snes pin 9
Eeprom A5 to snes pin 8
Eeprom A6 to snes pin7
Eeprom A7 to snes pin 6 but on the snes pinout pin 6 is supoused to be pin 12
That's where I am stuck any help would be appreciated.

Anyone?
Or does anybody have a different schematic?

Pick a different EEPROM, using a 16-bit ROM for an 8-bit cart is going to be an unnecessary pain in the butt.

Yes, that method is old but I've attached something that should help you.

Thanks guys.