Suggest you Google "General Motors of Canada, Vintage Vehicle Services" which provides various ways to reach their oldtimers desk
Operators are standing by to (for a nominal fee) provide all data they have on file
You will likely find that for a 1953 GMC most Engine, Trim, Body & Paint coincide with that for a Cdn Chev Model 1300 pickup
[hope you will give serious reconsideration whether to rod it]
