Holcomb: Depends on what you mean by "a little more go". Are you looking for more top end? better acceleration.....? And, are you running a V-8, 235, 216, and then there's the trans, is it the stock 3-speed, 4-speed, overdrive, auto???? Do you know what ratio your rear gear is now? All of these things will play into the mix in determining what you want to do with your rear end gearing.