Jim - The biggest advantage I can see from coil-overs is being able to easily and accurately dial in your ride heights and they should save a little weight. One thing you'll benefit from is quality shocks with valving tailored to your driving tendencies. You'll forget about having the right geometry once it's properly aligned, but with todays crappy road surfaces you'll constantly be reminded of mediocre shock valving with every pothole and abrupt road surface transition. Do your shock homework too!
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