Even with a bad body, it's a great find! That's an ST400 by the looks of it, and it will be an ABS body. It would have been C stock class in the NATVA. The chassis will fit in any of the later bodies, including HDPE.
The points are under the flywheel on the recoil side of the engine. If there's no spark at all, you may have to pull the flywheel and change the points/condensors, but they can be cleaned and adjusted through the slots in the flywheel (still not easy, especially with the engine in the machine).
The bearings will probably have to all be replaced if it's been sitting outside all this time. You may have a job getting them all out without a torch, but if you're going to trash the body, it makes it easy.
Good luck on the project.
Stuck in the seventies- not in the swamp.
(6) Attex, a Hustler, a Super Swamp Fox, (2) Tricarts, (3) Tri-sports, a Sno-co trike, 3 Dunecycles, and a Starcraft! ...so far