Hey Buc –
Scott sold two models in 1946, under the Scott Atwater brand. They were models 461 and 467. As far as I know, the only significant difference between the two was that the model 467 had a recoil starter. As you have seen, the Scotts and Firestones have different legs, lower units, water pumps and transom clamps. The shape of the fuel tanks was also significantly different between the two.
Scott sold four different models under the Firestone badge: models 460, 462, 463 and 464. Only the 464 had a recoil starter. Based on some pictures that I have seen, I believe that the models 463 and 464 had the newer gearbox and water pump, similar to your 467. The 460 and 462 had an older style gearbox and iron impeller that were left over from the pre-war Champions.
Makes me curious what models 465 and 466 were. Perhaps they planned to release the 7.5 hp in 1946. Or maybe they developed a couple more badge motors for another retailer.
John Van
