I was curious if anyone has ever tried using sedan springs AND air shocks. With a 12v low-volume high-pressure on-board compressor and a valve or two, seems to me like you could have the best of both worlds. Adjustability for load handling, AND an inexpensive alternative to the pricey SLS components...

__________________
1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown