Engine id help

[smokinsmo]

im not sure if i can put engine here or not, If not please move to correct place, thanks

Ok i have searched and searched and i cant find much on this. It has no stamps on it anywhere, so here are some pics and if anyone can help me with this it would be very appreciated.

 

[Mac]

Looks like an old Cast Iron Briggs with a newer updraft carb on it.
Looks like it has a 1/2" diameter crank, so it's probably only about 1hp.

 

[The Restore Kid]

Yup, old Briggs.. Probably an "N" or POSSIBLY newer and like a "5-S" but I'd say some kind of "N"