I noticed last night at the dealership that the denali lights were different than the regular yukons. Do they produce more light or is it a different bulb in them? I've got an 07 yukon and was there to see about the new slp which are some extra mods that gm is offering and they do not mess with your warranty. Anyways I test drove the denali while I was there and WOW. The acceleration was top notch along with the rumble of the exhaust. I love the chrom accents which is what I'm planning on adding to mine. I would love to upgrade to the denali but afraid of what the gas mileage would be. I'm getting 18 in the truck now and that is a mix of city and hwy. Also if anyone knows if the chrome strip on the denali's running board will fit the regular yukon? I've seen plenty of these on ebay but actually looking at the two the running board looks different and they do not look like they would fit on the regular ones. Sorry about the long story just trying to figure out things. Some of these may have been answered but couldn't find any info. Thanks!