I spotted these on another forum so checked out if they were available on eBay. Surprisingly they were both readily available and cheap. So picked up a couple for £1 or £2 each. These paint up really nicely.
I added some comms equipment to the first one, including a radar from a plastic Rhino kit from Games Workshop. The crewman is from Ground Zero and came in the same bundle as the mini-mule I posted earlier. I left the second vehicle without any additions.
I have another on it's way from ebay which I'm going to up-armour. The big windows on these look far too tempting a target.