We have a PWC B unit chassis from the 6-34503 No 2368C B&O F-3 that really sounds nice. The paperwork I saw has no mention of what version of RS this is but the horn sounds are very strong and somewhat different from sounding to sounding (multi-horn?) and I counted 7 or 8 different RPM levels.
Does anyone know if this is RS4.0 or 5.0 please?