Leave the rubber spacers in there or you get horrendous squeeking noises from the springs rubbing metal. The aluminum spacers were put there by the DOT to hoist up the finely-balenced Pantera so as to pass Fed headlight heights & bumper height laws. They can be removed & wheels realigned, sharpening up the handling. Vendors also sell aftermarket coil-overs. These allow you to individually weight each wheel for the ultimate in balence and precise handling, and most have external damping adjustments. Lots of fiddling to get everything just right, though. A couple of degrees nose-low will lessen the avg. Pantera's floaty feeling above 150.