I need a spring that drops my rear 1.5 inches (GT Coupe)

Most of the springs that i found either drop the rear 1 inch or 2 inches. I really need something in between.
Thanks in advance!

Eibach Sportlines are 1.3" in the rear, Vortland Sport Plus are 1.4", Steeda Extremes with a 1/4" spacer will be at 1.5", Saleen's S302 say 1.3" as well.

Also, for what it's worth, with my stock wheels, 25mm spacers, and the Sportlines, I can barely fit my fingers between the fender and the tire.

Wow i always thought sportlines were a 2in drop all around. The rear looks so low on cars using those springs.
Thanks for the quick help!