Our last trip to Australia and Tasmania, the first with all the modifications and additions to our Troopy completed, revealed some shortcomings in the suspension—no surprise with 180 liters of fuel and 90 liters of water on board, in addition to the cabinetry, pop-top, bumper and winch, etc. etc. It wasn't bad—the rear sagged perhaps an inch with everything aboard including us—but an inch is too much, and we could feel the shocks working hard to maintain control.
Daniel at the Expedition Centre in Sydney, who'd done all the work on the vehicle, had just one recommendation: A company called, humbly enough, The Ultimate Suspension.
TUS, as I'll call them, advertises "custom-built, fully integrated" suspension systems designed specifically for each vehicle, not just each model. After receiving the analysis above, I can't argue that their approach isn't thorough. I'm not sure what the percentages in the shock absorbers refer to—would 100 percent mean it's as comfortable as a Range Rover? Must ask. In any case it's interesting to see the weight at each corner and across the vehicle, and to know that (ahem, rather surprisingly) we're still safely under the Land Cruiser's GVWR, even with a full load of fuel and water.