Thanks guys, but I just looked at the pictures side by side of both ambulances, and mine uses a different type which I just found. Mine uses the Whelen model 97 light, which looks like this: http://ambulanceparts.com/whelen97seriesclearlens.aspx . Kind of expensive when you need eight of them (2 x 4 sides)! I would love to change these to LED, but $$$$.
Life Star Rescue is one I found a while back, and they have parts for the tail and interior lights etc.
Dayummm. What are those things made out of, transparent aluminum?