Hi right now my 2000 awd came stock with the 9.25 and 355 gears .. as build sheet states found a 392 diff but its a 99 and rock auto shows the 99 and the 2000 as two diff part numbers ....so prob just get another set off of gubber up both 2000 392 gear diffs complete for 400 for my 33s as the chart shiws that to be the best for mpg ...