Stick with the 3.55's... the difference your going to feel between 3.55 and 3.73 is hardly going to be noticeable and definately not worth the money, time, and effort.

Definately money better spent elsewhere. I'm running 3.73s with a 28" tire, so my gearing is longer than it would be if I had a 26" tire and 3.55's, and I love it the way it is now. 1st gear to 40mph, yeehaww.