I would just HH mod your rears, since your car is drag oriented upping the rear spring rate might hurt launches. If you would like to contact the guy on frrax his email is here.
http://www.blainefabrication.com/contact.html
His name is Alan Blaine just ask about the eibach springs listed on frrax. Say a I told you about them and you dont have an account. Just a heads up tho these would be coming from Cali shipping might suck.
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1999 Z28 Camaro SCCA ESP
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