how much difference between 3.91 and 4.10

Mshred,I have driven my Dart Sport with 4.10 from Oakville to CayUGA SPEED WAY.i TOOK THE Q.E.W to hwy 20.On the hwy revs were 3000 in slow lane at about 60mph,so i would think 3.91 would rev. a little lower.How much hwy.driving are you planning on driVing?I have 3.23 gears for both 8 1/4 and 8 3/4 if you want to step down to a lower GEAR.