Looks like you will need more backspacing on the rear wheels to drop it down more. 4.25 seems to be the magic number. I've run 4.5 and needed a little spacer to bring it off the frame rail. your car may have station wagon springs in the rear to keep it jacked up to clear the tires. Try a set of standard springs and it should bring it down. Also try loosening the bushing bolts with the weight of the car on them and then tighten them back up. This was new stock springs and a 255/60-15 tire. It looked like it was an inch or so lower with old springs.
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