My son in law's nephew bought an old Honda trail 70. I figured it was headed for a rough end to its life. He said it was too slow, so he bought a clone engine. He looked at it, drew a wiring diagram and put it in, hooked it up and wired it himself. Now it goes 65, wheelies in second gear and he's 13 years old.
I guess restoration is out of the question. L0L.