i have a Nissan titan se with the 5.6 5 speed trans off road/ tow package that is 2Wheel drive does anyone know if when Nissan built this truck did it originaly come with a dana rear in it or is the rear in this truck I own a swaped out rear what rear brands did they use on the original stock 2004 crew cab off road 2 wheel drive my rear on it now ( Since I bought the truck) has a dana emblum on it and theres a number inside the rear with 729.6 stamped on it there is also a lot of numbers on the cover plate where the dana emblum is. reason im asking cause I think someones been putting the wrong parts on my truck and I think the rear might not be the stock one they have been going off the vin with any help would be great