Thanks.

So I drove about 50 miles last night. I noticed a pretty good throttle response, as I noticed before, but it felt more "peppy" on the highway. I also noticed about a 1 mpg improvement at highway speeds. (works for me) I guess time will tell any true MPG gains, as I know a lot goes into calculating any improvements.

Overall, I totally recommend is mod to every 4.7L owner.