i have a 1990 mustang GT, it has been equipped with the Trick One 5E suspension kit by the previous owner. I currently have 10.5in wheels in the rear, the fenders are flaired as much as i can but because of the weaker rear spring set-up the wheels will bottom out on bumps and i cant even have a passenger in the back. it has really been a problem and has already eaten a set of tires. Since my main goal for the car is all around handling, what springs would you recomend i use? i would really like to get this solved without having to get different wheels and tires.