I just picked up my 2wd Titan. I replaced a 2006 F150 with this truck and I already like this Titan way better. I do some trips to the dunes, and other places, where it was nice to have the 4x4 in the f150. My question is... on my new 2008 Titan SE with the factory installed tow pkg., do I have a limited slip or anything? Or is it just an open diff? Or is there a way to tell. More questions to follow in the tuning area, but one at a time.