If I remember correctly the old gbatemp cheats forum had a thread on EO3 ar codes that included a code that would change to first item in your inventory to a specific item. But since the cheats forum seems to down indefinitely, maybe someone has it. It's not in the cheats database. Alternatively, I could try to rewrite the code myself. If there was someway to find the memory address of the first inventory item. I know the hexadecimals values of every item so theoretically it shouldn't be difficult to find. I would just keep changing the first item in my inventory and look for the new value. Once I know the memory address I could make a code that writes the desired value (specific item) to it. I don't know which programs I would need. I think Datel used to offer some hardware, the trainer toolkit, but it seems that's out of production.