Mid-80s Scamp is 20 years old. Time probably for an new axle. More than one way to change the height!
Well, not without some welding there isn't
What Donna refers to is that with a replacement axle, the down-angle can be changed to give more road clearance, plus a spacer can be welded between the existing or replacement axle and frame to lift the body. If the body is lifted enough, in either manner, it may be possible to install larger tires
and wheels for increased height.
With torsion axles, the angles and dimensions of everything are permanently set at manufacture and are not adjustable. And 20 years is a long time...