Wahr, I love that yellow truck. I've always liked yellow, tho. But you do have to keep yellow clean to look good. My Chrystal Granite Wrangler looks pretty good even if it's dirty.
3.55s stink out loud because the 5/6 has a really tall first gear. It's like having to start out in second. By the time you get moving, the other guys, with proper gears have shot off the line, and are gaining momentum. That not just racing, that's every time you go to get groceries, or whatever.
4.10s are the gift that keep on giving. There is no advantage like Mechanical Advantage.
With 3.55s, my truck wouldn't even shift into "6th" gear until 60 mph. Therefore, at 55mph, with 4.10s my truck's engine is turning the exact same rpm as it did with 3.55s. Once you go over 65, you will probably lose an mpg or 2. But keep it at 65 or less and there really is no downside to 4.10s, except for the installation cost.
Add a Hemi Fever Tune and you transform your truck from a sad moaning, lugging slug (slug may be a bit harsh, but right now, I can't think of another word that better describes my truck with 3.55s) to a lighter, quicker, happier machine.