That's the code for haven't driven it far enough yet to determine ride quality, and it may be a while since it is the wife's. I also used the stock ride height for the same reason. I had considered raising the front a 1/2" and may do so eventually. At least they will be easy to remove now since Bilstein uses bolts on the lower mounts. I wasn't planning on doing this until last Sunday when I notice the oil drip by the left rear wheel. The other rear was just starting to leak also. The only choices were stock Motorcraft, KYB(rear only), and Bilstein. I have had Bilsteins's on my F350 for 13 years and they were a definite improvement.
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