Data Plate

This might help. 8CM refers to the engine.

(Info. copied from the internet as follows) These are types of cylinder heads used in Ford engines. According to a source, 8CM heads were low compression Mercury heads commonly used in Canada, while EAC heads were higher compression Mercury heads also commonly used in Canada and the Mercury counterpart to the Ford EAB. EAC is the last Mercury flathead.

https://www.bing.com/search?pglt=41...AA0gEINjk4NGowajGoAgCwAgA&FORM=ANNTA1&PC=HCTS

https://www.fordbarn.com/forum/showthread.php?t=215326
and this:
https://www.bing.com/search?q=what+...CD7D4300A6E62DEC010C6B43&ghsh=0&ghacc=0&ghpl=
and this:
https://www.automobile-catalog.com/..._mercury_2gen_sport_sedan/1949.html#gsc.tab=0

If possible, please post a photo of the vehicle, the engine and the data plates attached to the firewall fender cowl on passenger side of car.
 
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