Are 3.55 gears a good choice?

I just picked up a 3.55 for my Dart. I have 3.91s in it now. I am running a T5 trans and plan on doing so road trips with it. With my 26" tires and the overdrive it should put my rpms around 2400 at 75mph. Randy's ring and pinion has a handy calculator that I used for my calculations.

http://www.ringpinion.com/Calculators/Calc_RPM.aspx

If I don't like it I will switch back.