I personally don't care for superbeetles....the suspension or style. I'd look for a pre '67. As much as I love hydraulics...you can't 'buy' a bolt-in hydraulics kit for a bug, but you can if you want air. Check out
www.airkewld.com or
www.kustomcoachwerks.com . I've always wanted to see a bug with a hydraulic cylinder off the middle of the beam adjusting to torsions, maybe you could be the first to do that! Anyhow, best of luck with it.