Congrat on the 4.10's I was so stoked when I did mine too. You will have a lot of fun. 
My 4.10's were fine for DD. I am up to 4.56's right now. They still rock.
Wow! Are you driving a 6 or 8? My GT NEVER got that good of a MPH, even bone stock on long trips. The best I ever saw was 21 on the highway. Right now I am only getting about 17.5.

now how do you guys like 4.10s as a daily driver
My 4.10's were fine for DD. I am up to 4.56's right now. They still rock.
im getting a true 23.5 mpg on the highway at 85 mph with 4.10's was getting 25 with 3.55's. I get between 350 to 375 to a tank.
Wow! Are you driving a 6 or 8? My GT NEVER got that good of a MPH, even bone stock on long trips. The best I ever saw was 21 on the highway. Right now I am only getting about 17.5.