I Don't think so, on your call of a Yamaha engine on the bigfoot. how in the hell could a mercury engine made in Fon Du Lac Wisconson, get a Yamaha tag???
Lots of lost $$ both from current owners who are likely to take a giant hit in selling price whenever they decide to sell as well as dealers who spent big $$ keeping techs trained and tooling up to date. Blech!!
Did Evinrude make a fourstroke?
Evinrude re-badged some 4-stroke Suzuki's in white cases under their "Johnson" brand, hence,:
"Big White Johnson".