Baja Bug
Basic changes are simple. Lightweight fiberglass body panels are fitted after the metal body parts front and rear are removed.  The rear change leaves the engine totally open to aid in cooling.  Tubular steel bumpers are fitted to the body and floorpan to protect the engine and those riding in the car.  Shortened fiberglass fenders and sometimes more tubular steel parts are added to the car's sides.  The torsion bar front and rear suspensions made it easy to raise the body and to allow the use of large off-road tires and wheels as well as longer shock absorbers.  Some people even get rid of the torsion bar suspension and install coilover-type springs that mount to a roll cage.  This kind of car would have lots of suspension travel and a smooth ride.