Nice Miike

Hi....I need some help in finding the right rear end gear for my Mustang. I have a 2002 V6 Mustang with True Duals and a Cold air intake.I think the rear end gear thats in it now is a 3.27.......But im thinking abot putting a 3.73 or a 4.10.....So can u please give me the pro's and con's to this.......Like will my car fly off the line and not have any top..... or u wont really notice anything so dont do it...I just need some help, so someone please help me with this.......Need Help Soon.......Thanks