Yes the 9300's are Oshawa borne. I have a 1952 9430 1 ton which I have just started tearing down this fall. There is lots of good information on here all you have to do is dig....You can also contact GM Canada to get the report on your production date, I think it cost about $40. Not a great deal of info in it as they didn't keep really thorough records back then. There is a link on here to the GM historical records if I can find it I will add it.
Found it : www.vintagevehicleservices.com/index.html

Last edited by 52_Ton; 02/10/2012 12:28 AM.
1952 GMC 9430 one ton pickup, a work in progress

1952 1-ton pictures on Photobucket