Is there anywhere to look to see what gears my truck came with stock?

I have an 05 Ram 1500 QC w/ Hemi.

 

In the glove box there should be a white sticker that tells you what gears you have, or you can go under the truck and on the rear-end there should be a sticker that says the grear ratio, my sticker is on the passenger side of the rear end.

 

IF your truck is the sport model they come with the 3.92's and all the other trucks I think get the 3.55's.

 

My SLT came with 3.92's, so much for the sport idea.

If you have the 20" wheels, chances are you have a 3.92.

 

I think all the pre 06 with 22 have 3.92 antispin...

sports do not have 3.92 unless specially optioned or have 22...

my 06 4x4 has 17 with 3.92... my girls 06 has 20's with 3.92 but there is not mention of antispin on the window sticker...

Final analysis: check your glove box. Of course the 06 does not have that sticker so...