I have been reading the threads about gears and there are lots. But so far they have been about 3.73 or 4.10s. However my needs tend to be less of a hole shot and more towards Highway cruzing. My 2008 came with 3.31s which I understand became standard that year from the old standard of 3.55s. The difference is about 8%. There must be a reason the Ford engineers picked the 3.55s on the early S197s. I would expect to feel a little more push when getting on the freeway and pulling away from stop lights. It seems like it would be a better gear all around. What is the effect on MPG? Also, browsing for information I found some 3.55 new take off gears which fit 2005 to 2007 8.8 rear ends. What changed in 2008 about the gears?