I have an 04 GT 5spd and my RPMs are low in 5th...lower than my dads 00V6 5spd...at around 1600-1700 @ 65MPH.If someone with an auto 04 GT runs the 1/4 in a better than the 03 auto GTs, and if 2 different people, one with an 03 auto and the other with an 04 auto and compare RPMs in O/D @ 65MPH and then we will know for sure.