I have eibach lowering springs in the front and rear of my 91 gt with 17 x 9... 275 40 in the rear....

i bought the car with those springs in it and its way too low and i rub the inner lip. i was wondering how much of a lift i would get if i put in stock springs. i have tried a spring spacer but it doesnt fit between the springs even after jacking the body off of them. sny pictures would help or info. thanks