The 1LE is a lot more than suspension.
You get the close ratio mm6, 3.91 gear, extra fuel pickups, stronger axles and hubs, trans cooler, electric steering, shifter, and more. If you add everything up it is impossible to get everything for anywhere close to $3500. I am actually thinking about selling my SS for a 1LE. Look at it this way, with the 1LE you are paying $3,500 for the ZL1 wheels and tires, all the other options are free.