Help me do the math. 4.88 gears

Thanks for the help and input. It's not gonna see much of the highway luckily, but I'm also not selling the 3.55 I have now. I've been looking on how the D-Dart Commando was set up and my combo is now not that far from it. I just want to play around a bit this coming summer and take it to the track with the 4.88 and see how it does. Then It's back to the 3.55.