Hot Rods Please Help ID Single Cylinder Head F.D.V

I just got this with a bunch of early sprint parts . No numbers on it. I thought maybe a marine engine for a sprint car
I appreciate any help

 

Appears to be the head fr4om a single cylinder water cooled (possibly outboard?) 2 stroke motor

 

Judging from the size, I'd guessthat its the head for about a 250cc (or so) cylinder, not anything sprint car. Most likely from a kart or snowmobile engine, but an outboard is possible.

 

Thank you all

 

Might be 4cyl Elto individual head. There were midgets that ran the Elto converted outboard boat engines.

 

The Elto ran a rotary valve. This appears to be set up for a piston port. Also, the Elto had 6 head bolts and this only has 4.
Elto midget engine: