The ride in my recently aquired and much admired low millage 91 forty van is somewhat jarring to say the least. From my experience with leaf sprung series landies I know that they can be greatly improved with a set of parabolic springs. My question is does anyone know if parabolics are available for my vehicle, or any other suggestions for softening the ride a little bit. It had new standard srings and shocks on the rear just before I bought it, but they don't seem very supple. The front springs look to have seen better days and are about flat, giving it that somewhat ungraceful dragster look, please advise.