Andy, here is the info for the Canadians;Gerneral motors vintage vechicle services there phone no is 1-888-467-6853 out side of canada (905)644-4060
the only e-mail address i have is
George.zapora@gm.com.the price for their services is 48.15 canadian. they can provide infromation on any gm product back to the 1930s(any canadian built ones)you need your vin number.they tell you things like;shipping date,production date,paint and trim code,dealer who sold it,and all the options.It also inculdes the info that Andy was talking about (gm or chev) also includes the production numbers for that model number