ok some of yall are gonna think im stupid but here goes. I of course have a 3.9 V6 so what kind of gearing do i have in there and if I changed it out could I go faster???

 

Poke your head under the rear end, there should be a tiny little metal tag bolted down with one of the diff cover bolts. It'll have a number stamped in it such as 392, which means 3.92:1 ratio. I also noticed a sticker wrapped around the front driveshaft had the ratio on it as well.

And yes, if you changed your gearing you could accellerate faster.