personally I hate my 3.55 because it accelerates poorly and I have to tow with OD off at 65-70 mph. I had tried a v10 with 3.73 and it was sweet. I do admit that I can get 13-14 mpg with my heavy foot and I can go 75-80 just cruising at 2300 rpm.

 

I just got back from a 475 mile(one way) trip with 700-800lbs of stuff in the bed and got 17.94 mpg. I averaged probably 72 mph. At 72 mph I turn about 2000 rpm with 3.73ls.