There are tons of locations to buy 'em...I don't yet have a favorite to suggest.
However, I do have a question about the gear ratio you've selected. 4.88's are great with 33's for rock crawling, but are pretty deep for street and mud that I'm pretty sure you'll be running in Macon. If you are planning on moving to 37's or so a little later on, the 4.88's would be fine. If not, you might select 4.10's instead.
-> Click Here
<- for a good gear chart.
And after you regear, don't forget to put a new speedo in to accommodate for the change in your speedometer. Here's a good link -> Click Here