That is a LOT of shipping LOL. I don't know why I buy more. I've got enough projects around here for 40 years, and at 73, how long can "that" go? Thanks for the offer. Why don't you fix it?
Just got in from looking over the 5 1/2. It still had "looked like clean" lube in the gearbox which makes me think someone recently put it in there. Mag is full of DIRT, but no bit ultra problems. I don't fix the gearboxes if they will "run awhile," rather, check compression, tune it up and run it and see how the gearbox does. So it needs coils for sure, maybe condensers, maybe points, maybe plug wires. Clean carb and new carb gasket, plus fuel hose, and "see what we have"
The big "owies:"
Gearbox seals leak, people don't drain them, they can freeze and break and corrode the internal parts. They likely need water pumps. On the smaller, older engines, you must remove the powerhead and burn a powerhead to lower unit gasket.
If people aren't careful, you can get water into the power head. The exhaust and water going into the lower leg can communicate water into the exhaust ports IF it's laid down. Then into the cylinders, through the intake ports,and now you have water in the crankcase. The crank, rods, needle rod bearings all rust, you are DONE, and of course cylinder liners and rings same deal
If people lay them on their back, they can get rain/ water down through the carb, ruin the reed plate, and into the crankcase
And...............unpredictably, the top or bottom crank seals can fail AND THOSE ARE A real PITA Many of them require a special expensive puller to change them. I don't have one "yet."