I will have to measure the sway bars. I dont know what size bars the racecrafts are. The spring rates....no idea on what they are either. I would have to research. Rarely will Saleen give out those kind of specs.
As for ride quality, its 'ok' as it is. But for a nice, long, hwy trip, if I can make the shocks and struts 'somewhat' softer, that would be great. The roads around here are not the best.
I think, for right now, the best thing for me to do is put the car on a diet. Carbon Fiber hood, rear seat delete, carbon fiber hatch, smaller spoiler, and some race seats. That should net me close to a 250lb drop. A little over budget though!