Are you anywhere near a Dobinsons dealer or even better agency? i have had good experience with them, as have others. They measure the corners of the vehicle, punch all the data into their computer and come up with a range of options. I was given the 'like or exchange option' on a set of rear cols and the service was brilliant out of the Dandenong vic facility. I ran Koni hydraulic shockers for 15yrs and was very happy with them, however found the front dampening wasn't up to speed with the engine bay weight, so went to a custom made twin shock set-up. Anyway, it worked well but I have since upgraded to the ARB BP-51 set-up and will see how that rates - better be great based on the cost!!!