Hi Sean:
You are welcome to come and spend a day crawling over our C15TA at the Swords and Ploughshares Museum (
www.calnan.com/swords) and I can get you permission to crawl all over the ambulance in the Canadian War Museum.
In return see if you can convince resicast to sell the Polstens without the mount (just the guns and mags) as I might try my hand at making a model of the Mounting, Quadruple Anti-Aircraft, 20mm, Polsten, Canadian Mark I. If I get really excited I might also do the Mounting, Twin Anti-Aircraft, 20mm, Polsten, etc, etc
Cheers! Mike