Some of the horns were the same, as was the moving off sound. The startup sound was similar to the newer TTS version. Not the same as the original TTS chip.
The 37 sounded ok, but the warning sounds on startup must mean its intended for later liveried 37s.
The 08 is pretty much the same as the TTS file, but it does sound richer. Having said that i too k it out of my 08 in the end as the loco got very hot where the speaker was at the front.