We attempted to incorporate all the mods as they came out, but it was really a hit or miss affair. No one really cared about minor quirky things. Changing gators was the most time consuming mandatory even.t. We routinely ripped them open during exercises because we did mostly off road tactics. The heater didn't warm up anything, and took up space.We made makeshift crew commander windscreens. There were no spare body parts such as bins and fenders. We repaired them ourselves. I once saw a new muffler installed, and we were amazed at how quiet a ferret really was. It was unfortunately the only spare muffler in the Brigade. There were some that still had the original turn signals, and we used the plastic lenses from the deuce and a half running lights for replacement lenses. Yes, there were a few with the different drivers side hatches. Ferrets were not exchanged from Regiment to Regiment. They were permanently assigned. Never ever saw one go to Montreal for rebuild. All names were assigned, not made up. All this was back in the 70's. I'll look in the museum photo archives for pictures.