Actually, they're both almost identical in price. One GM parts seller has it for $358 shipped (cheapest I found), whereas Norm's dual outlet smoothie (no lettering) is $349 shipped.Ozone- I looked for about 4 months, when I changed my NA coupe to a GXP exhaust for a stock rear valance. Decide for a few dollars more to buy a rear valance from Norm's. Had it painted the same color as the car. I think it looks better than the stock rear valance.