I run the Eibach kit and it works great in conjunction with my 70/30's and 50/50's. My dad really liked the ride of his Cobra so instead of adding the springs we just added the HAL adj. struts, and shocks and are keeping his stock springs. The stock Cobra springs are much better then the stock GT springs but they do no not hold the front energy that the Eibach springs do. If your set on swapping springs go with the Eibach, I feel you can't go wrong
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