ttAmerica RoadsterAWD

At what ride height, that is, what measurement between the the center of the wheel and the bottom of the fender above the center of the wheel will result in both control arms being parallel to the floor? My current set up, placed years ago, had the popular Eibach 220 lbs linear rate with yellow Koni's, Fabcar control arms etc., Now I realize when I look down at the control arms they are actually pointing upwards at both ends. This gives me a 12 inch measurement between center wheel to mid fender straight above.

I'd like to change out my springs to a streetable set up whereby the control arms are parallel to the floor. What will I need to look for, how do I order such springs, what data do I need??

thanx

Jaime