first of what does dsm stand for and second off do you know how i can check if my car came with a 3.23 or a 2.73?

 

if you have a selectable first gear (there is a "1" on the gear shifter) then you have a 3.23 you can also check in the glovebox and look for your build code sticker look for GU5(i think its GU5) on there if you have it you have 3.23. If you have a stickshift its a 3.42 ratio.