De-crust it & rebuild it as a fun car to run. It probably has a 16D motor, change it to an FK if you have one. Make sure the gears, tires, & body are in good shape then run the smoke out of it.
At one time you could get aluminum pans & extenders to build that chassis for a 4.5" car. Don't spend the money for that stuff today even if you can find the parts.