The Siren Board

I'm currently 3D modeling a mini Allertor for fun and was wondering if anybody had the dimensions for the parts such as the main torus-shaped section, horn (in front of that section), intake, chopper, and hood. Any help is appreciated!

Sorry if this is the wrong place to post this by the way-

Here's an example of the dimensions I'm looking for.

You don't have to provide all of them, but I would be EXTREMELY thankful if someone could provide me with a few of these.