[blue00gt]

I would agree with Unit here. How the car rides and handles depends on more than just the spring rate. If you cut off a coil you are changing the dynamics of the vehicle. If those Saleen springs are progressive, then you especially shouldn't cut them because you will be removing the softer portion of the spring at the bottom and making it shorter - it will ride like a covered wagon. Some springs also have dead coils at the bottom that compress and touch each other when they are loaded (they approace infinitely stiff when they stack on top of each other, so they don't effect the way the rest of the spring works), but are just springy enough to insure that the spring will not lose contact when the spring extends like if you do a Dukes of Hazzard maneuver. You may even be risking a spring popping out if you cut them.
I would save up for coilovers... That way you can adjust the height just right. Otherwise if you cut your current springs and don't get it right, you are screwed. Even if you do get the height right, you may still be screwed.