Building a proper chassis -torsion bar beetle....

[judgie]

if you dont want a cage then try putting the cabby sill renforcements under you floor pan and the sill to 1/4 panel panels.
get some brace bars on the beam, like the ones on a baja.
if you can find somone to do it get the lower front trailing arm bent out a bit to increase the camber and spend some time on a proper 4 wheel alignment
blistien or konie shocks all round.
use a splitty front mount and trekker rear mounts on the gearbox, this is what cb sell as h/d performance mounts
cheers rob