you don't have a dana 80 front...you might have a dana 60 though. I'm pretty sure since its a dually, the rear is a dana 80. probably 4.10's, so 3.73's isn't much of a change, not really cost effective in my opinion. $1500 is about right, maybe closer to $2000. A different chip like dp tuner, or tony wildman might net more mpg on the econo tunes. 2-4 times cheaper than a gear swap. Plus if you ever want to load that dually up like its meant, you'll be happier with the stock gearing. Get some bigger tires to run lower rpms on the highway.
Last edited by sirnunya : 05-25-2008 at 04:38 PM.