At ~ $8k to $13k on top of the cost of the van, they were simply not a conceivable option for me. I abhor rattles and squeaks and this seemed like an easy way to pre-remove some of them from the equation. Turning radius is silly — better than any truck or van I’ve driven, ever. I have not yet found an easy way to lighten the spring rate — removing one of the two leafs out back helped, but not nearly enough. Total outlay thus far has been about $10k for the build, on top of the $31k for the van itself.