I've noticed something very interesting, about some of the photos i've seen of Canadien built Chevrolet AD Big bolts. They look to be using Heavier GMC axles on some of the photos. You would never see the Heavier, larger 6 stud wheels on a U.S. built '47-'54 Chevy Big bolt. Does this truck have a GMC 248, 270, or 302 engine, or Chevy 235, or 261 engine. Does it have a SM420 4 spd. tranny, or Heavy Duty Clark 5 spd. tranny, that GMC usually paired, with the Heavy axle trucks.