To accomplish what you want, I would buy the STEAM Kit. It comes with the P3/2 board. The upper board of this combination has plugs for your incandescent lights (once the boards are installed, all your old plugs are reused). The kit also has the correct speaker, heat sink, and a lot of extra incandescent lights for you to use. Another bonus is you can use your current tach reader. The only down side of this procedure is you must remove the black plug holders from your old 5 volt board, then VERY CAREFULLY remove the white plug holders from the P3/2 board, and replace them with the black plug holders. You do not have to replace the battery plug as this is not used as the P3/2 has super caps on it (the two pronged plug in the middle of the board is NOT for a battery). The kit I believe is cheaper than buying the P3/2, speaker and heat sink separately (although if you order the P3/2 board, you CAN get it with the 5 volt connectors already installed). You would also have to install the correct diesel chain file for this as the steam chain file is probably already installed.
Hope this helps.
