[David_Hayward (RIP)]

Thanks Greg! Here is a similar truck:
C-60448-M-GS-9

GENERAL MOTORS OF CANADA
CHASSIS C-60448-M
CAB MODEL 13
CHASSIS SERIAL 3844326798
ENGINE NUMBER PR3943551
ORDER LV1515
DATE OF MFG Nov 22-43

This shows you the sort of production rate..725 and 798 a few days apart in theory with engines just a few numbers apart as well which is pretty remarkable given the storage / selection process at Windsor (Walkerville) and Oshawa plants.

Cheers,

David