No sign of any holes in the roof to hold a light bar or single beacon type. There are some mounts in the middle of the dash underside where a radio probably was, no good picks of that, Mike might have some. No obvious switches to run the siren or radio on the dash, maybe hidden underneath, need to look.

There is a cable running to the rear through the interior, probably to the radio transmitters and also found one on the exterior that seems to go through the gas tank shell? Sounds strange but it is there. Haven't traced where everything is coming and going yet. I can't remember if there was any place that looked like an antenna was mounted. There is no sign of anything different in the interior to indicate ambulance or police, nothing at all. Looks like a family station wagon on the inside, other than the radio mount and if you happen to open up the rear lid back by the tail gate you would see the radio transmitters, very low key.
Tony