Brian, the Kenmore STC does not support 160hp models, I know the STC just says O-320, but they have updated the supported -numbers and they are all 150hp. They did not have a firm price at Dans but were talking in the 8K range which included a new mount, cowling, airbox and paperwork. The prop required is around $3800, new exhaust $1650 for suttons-$3750 for leading edge, It starts to get pricey for 30 more hp. Crosswind STOl has a 160hp conversion $2200 which includeds the short mount, but "NOT" approved on floats.
Jeff Beaudoin
P.S Brian, I am in the metro area, used to have a 12 out at surfside, PM me I'll give you my phone#