I have a Denali 2007:Question:   According to my mechanic I need a new front differential carrier assembly the ratio is 3.42 can you help me?Answer:  We can supply a new the front differential you need for the 2007 Denali. This unit will have a 12 month warranty. Order our part number MWT440-00130. This is a 8.25 IFS FRONT DIFFERENTIAL ASSEMBLY with a 3.42 ratio your cost is $937.70 plus $250.00 core deposit plus freight. In order to provide the correct part at the time of the order please supply the VIN number.