I have two low mileage, water-cooled, Solo mopeds. One is a custom that I got from Joe Shupp last spring as a trade-in. The other Solo 40:1 is at my shop. The one at my shop is yellow and green and is complete except for the starter clutch engagement bar. You could make one or two good peds from these bikes. I also have extra seat, muffler, and a bunch of NOS Solo parts to go with it.
I have never run either one of these peds, but they should fire back to life with just a little tinkering. The gold one has good spark and compression and a custom bi-turbo muffler. I've never checked for spark on the other ped since I couldn't engage the clutch. The motor on that ped looks like new.
I'll take one good Puch or Italian Ped w/Minarelli motor for both Solos or $300 cash for both.