springs are the way to go, shocks are not meant to hold the vehicle up. Helpers are alright, but if you can afford it have 1 or 2 leaves added to the springs on the truck it is a much better answer. if you havent already bought the van look for one with heavy duty suspension, chevy HD, ford super duty etc. Most of the time these trucks have bigger brakes, auto trans coolers, engine oil coolers, power steering oil coolers, and trailering packages already on them. I have a Chevy 2500HD with 6.0L gas engine, it will pass every thing but a filling station, gets about 10 mpg with an 18 foot trailer carrying a 6000lb generator, but has no trouble going up hill, down hill, or anywhere else. I guess its like a mule if you want it to work you got to feed it. I will buy another one like it when the time comes.
