Hot Rods Aluminum flathead heads

I picked up some 24 stud aluminum heads the other day. Look like cheater heads but no cast numbers or name’s anywhere. Only thing cast Is a letter A and has what looks like MP 11 stamped in them. Any idea on who make them?
Eric

 

Possibly made by Ford in Canada. Tons of them up here.

 

Really? How about aluminum manifolds? I would really like an aluminum 8CM (or similar) intake.

 

I thought the Canada head’s actually had made in Canada or just Canada cast in them.

 

They do

 

The lettering can be ground off.

 

Hopefully you can see there is no A, but an NSN in the middle. Says MADE IN CANADA on the lower middle. And the C7RA- part number on the upper left. There is no MP stamped anywhere.