COBRA90GT said:$500? Ouch, that's overpriced!
How about getting a couple of buddies together and installing them yourself?
Here is a link to a "how-to" installation guide (for IRS):
http://www.fallscitymustangclub.com/How_to/SaleenSprings.htm
az_r2d1 said:Good write-up. Looks like changing springs on IRS is even easier than on a solid axle model...
I say do it yourself.