Quoted from golfingdad1:
Where can I get version 4.0 ?
I can burn roms, and only charge $3 for shipping.
Quoted from V_piscopo:
Would my old hook rom be able to be eraced and re used for baywatch?
If it has a UV window they can normally be erased and reprogrammed, even for a different game if it's the same size chip, so it depends on which specific chip you are replacing.
Disp: 27C010 (1M equivalent)
Display: 27C040 (4M equivalent)
So you could reuse for CPU for, but not display. (Technically there are tricks to use bigger chips in place of smaller ones in a pinch, but not always a direct swap without soldering/jumpers/checksum errors etc and depends on the game)