Every time that I see one of the photos of this blue P500F I try to remember where the photos were taken. It was somewhere along a highway south of Banff on our way to Sparwood and Kaslo, I caught a glimpse of the truck, flipped around as quick as possible and pulled into the fellow's yard. A really nice guy came out and was more than happy to let some (at the time) young kid climb all over his truck and take a bunch of pictures for my then very new website.
That one is a 1978, it was previously MB truck H13.What year roughly is the yellow one above? Still has a wig wag, with later doors.