If I were to go with 4.56's I would definitely support a site sponsor but I don't believe they offer 4.10's for sale or do they? I'm pretty new to this site so I don't mind input bc I enjoy learning new stuff.

I do have one question. If I were to go with the 4.56's and since the chart says I'd be turning around 2700rpm at 70mph, what would I be turning around 80mph? I'm not on the highway A TON but I do travel to Jacksonville around 3-4 times a week and when I hop on I-95 I want to be able to keep up with traffic without putting a whole lot of stress on the engine. Plus, I don't want to avg around 14 mpg haha