Are the springs different between S and non S models?

[steved0x]

I think the front are all the same, at least with the M030 sport suspension, but there are differences for the back. From what I've heard, you don't want the tiptronic rear spring if you don't have a tip, it will look like a 4x4. Ther might be a spring rate thread on here somewhere, but like Woody said, the weights are similar, and also note that the after market spring vendors sell just 1 spring set for the 986 Boxster, so you would probably be ok.