sure - check the rating plate on the boat. sounds about right. Those 18's are fairly light at about 80 pounds, and they're about 15HP by modern equivalent (propshaft) power ratings .I was wondering if a '65 18 HP Johnson would be a good match for a 12 foot SIB. The seller told me the brand is SportNatique but I can't find any info on it.
Thanks for the help