Re: 1952-1954 3hp piston rings
Try the following places:<br />
Parts for Outboards - got me some NOS ones for my older engine.<br />
Twin City Outboards - never delt with them but plenty here have.<br />
Mastertech <br />Worst comes to worst, custom made ones from
Otto Works. <br /><br />Good luck hunting!<br /><br />EDIT - Mike, outboards can be pretty pricey up here (not sure about Ont.). My impression of Florida is that they grow on trees down there though.

<br /><br />EDIT 2 - Oh, I missed the part about you looking for pistons too. If yours are in decent shape, reuse them with new rings. Finding NOS pistons is going to be next to impossible, and you will likely have to settle for some good used ones.