Let's play dumb question time:
Since the PS32 board used in the PS3 steam upgrade kit is a PS3 diesel board with an adapter board what would happen if you loaded a PS32 steam chain file into a PS3 diesel kit board along with a PS2 3V steam sound file? Would the board work the same as the PS32 board in the steam upgrade kit?
I had a crazy idea of taking a PS3 diesel upgrade kit, mounting it in the boiler of a Weaver steam locomotive, using the diesel kit harness and connecting the appropriate lights/smoke in the boiler, then just running 4 wires to the tender for the speaker and backup light. Load a PS32 steam chain file and sound file and it should work correct?