Ebay coilovers and springs tend to get premature "sagging" because the springs aren't cold wound, or shot peened, and usually not of the best materials, the springs will get soft and before you know it, your front end is lower than the rear.

+1 for Outkasted24: look for some used springs from someone on TR, South Florida Drifters, or even Nico.

G/l man keep us updated on what you find.