i have a quick question... i have a 1990 f150. its a 302 4x4 quad suspension. i just put 3/4 ton leaf springs on the rear and im looking into getting new springs for the front. when i put the ones on the rear it raised it 2 1/2 inches. which spring would work best... 1/2 4x4 coil springs or 3/4 heavy duty 2 wheel drive coil springs ? any help is greatly appreciated!!!