Grigg, My '52 GMC 450 takes a hub piloted wheel, pretty sure GMCPic's will too. All six of mine are stamped "Motor Wheel 83113 - 5 3/4 - 3 48". Either way, there's some good info in this thread. Scott
1947, 1950, & 1952 Chevrolet 1/2 ton 1952 GMC 450 series Cab Over Engine 1946 Chevrolet 2 Ton