If it's a CDN 3/4 ton it would be a 920 series. a 910 is the 1/2 ton .i have a 1962 920 it's a 3/4 ton 8 lug wheels. Sounds like a great project ,I haven't seen too many 3/4 tons around of this era.


1962 GMC 920 step side 261 4 spd