Mark - 9300 is the 'generic' ½T series designation used for GMCs in Canada at least til 59, and there's not that much difference from the US model, except engine could have had either a 235 or 265[283] - a pu would be a model 9314 in 57 I believe

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics