1969 Police car siren, which one is correct?

[Northernfins]

Can anyone tell me which siren is correct for a 1969 Mopar Police car? I see there are a few guys on here with fuselage cop cars.
I check sirens on e-bay but am not sure which one to get, from the movies it seems like they should make the slow and fast sound, anyone know?

Thanks, Marty

 

[69polara440]

Federal Interceptor or Director would be correct.

 

[Pete Kaczmarski]

Remember the control unit is really what dictates what comes out of the siren. Also, equipment could of been used for even a decade then so keep that in mind.

 

[MrMoparCHP]

This can be agency specific, ie CHP in 69 only had the growler mechanical siren and just started testing the Interceptor in some units.