Good luck with finding a honda for the base with the correct crankshaft length, those 2 strokes are great (others will always bag them out.) The only reason it will seize apart from a manufacturing defect is from a lack of oil in the fuel.
A briggs and stratton from a victa will fit easily, and you dont have to adapt the snorkel, overall though a lot of secondhand motors with enough horsepower are pretty well worn out by now, you will need a spacer plate even for the victa sized crankshaft as well as the blade boss, throttle cable, blade bolt and washer is also propietary to the victa as well.
Where to find a second hand motor? I generally find atleast one or 2 a week just driving around, either in somones garbage pile, scrap pile or at the tip when I do my weekly run.
A new motor of either type could be sourced from a mower shop, thats a briggs/honda dealer.
