Hi
I agree you can over spring a car, but at the moment my car acts like a speed boat when it comes on boost so it does need more rear spring. I think my motor & trans combo would add up to more than a Porsche. You can see in these photos that I'm getting lots of body roll and the rear end is dropping down under power.
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![](http://i1184.photobucket.com/albums/z328/1303Steve/scwf8_zpseef16891.jpg~original)
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Steve