Re: Everything else except an engine...
Where'd you find that engine? I've heard of Sears but never the "Companion." It must have been before the "Free Spirit" days, or was that J.C. Penny?
It looks pretty big. Cops will more than likely bust you if it says "100cc" on it and you don't have your "Papers" in order. But your engine is truly a nice find.
You can find a 2 stroke kit for under $150 with everything you need (Except bike, gas & 2-smoke oil) included.