early a body torsion bar ?

Sounds like the bars are just not strong enough hold everything up. If you stand the torsion bars next to each other on end, and you match one end flat to flat, the other end of the bars should be point to point IIRC. I've seen some bars that were on the verge of snapping that were twisted far enough to where they were almost flat to flat on both ends. If you're not drag racing, I'd put some heavy duty bars in there along with a good sway bar. Sure helps on the handling.