Curt,
Would a 47-53 USA Chevrolet 1/2 ton truck differential ring-gear carrier work in the Canadian 1/2 ton rear end?
I'm certain it will as this is what Patrick Dykes will suggest if a Canadian customer calls. The ring gear mounting holes (on the carrier) need to be elongated to use the Canadian carrier which Patrick is unfamilar with. There's a carrier album in my webshots that shows modifying a Canadian unit for the 3:55 gearset for anyone interested.