58 gale 5hp

I have a 58 gale 5hp in garage, it has not run in a few years. I am wanting to make it a winter project and restore it. Has anyone dealt with one of these before and do you think it would be worth the effort.

Well worth the effort and very nice running engine as well.
Make sure you touch all the bases before running (Water pump, gearcase seals if needed, ignition and carb)
A 20:1 mixture is recommended for that engine. Do not run it on less than 24:1 as it is a plain bearing engine.

Well I got it mostly apart, the first look at pistons is a concern. What you think. I am trying to find a new set since I got it torn down but had no luck so far. Any ideas?

Was not expecting this, of course I have never disassembled a outboard before. When I removed what I thought were the heads I was expecting to see the top of pistons. Just a dome with a hole for spark plugs. I am guessing that on e I split the crankcase the pistons come out and I just have the cylinder walls with no access to the top of the cylinder?

Where are you looking for pistons?
And yes, they are beyond a concern. Less than the recommended oil ratio or...a water pump failure occurred and the owner kept running.
You may find what you are looking for at www.aomci.org.
There is a free "webvertize" section there to find your pistons as well as a free "ask a member" section. They are the Antique Outboard crowd.
Am betting you will find what you need there.