I'd be more worried about terrible ride quality of Coilovers compared to stock. I'd stick with stock spring perch design. Perhaps upgrade dampers.
I'd not put bigger sway bars on her summer car either. Not as if Z has most forgiving suspension. She will hate the bumpy ride I'm betting.
I come from Porsche world and my wife hated my Zs ride. And mind you she has raced formula fords. And has driven variety of sports cars.
Also skip the LSD for her street car.
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Grant
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