Someone please edumacate a newbie?! After countless web searches, I can't find VIN and model number info specific to Toy 4x4 trucks. Everything is generic. "if you have a number in xx position, you might have a vehicle" and other such hi-tech goodies. I want to know and see all the options for each possible letter code. I bought the truck used, and have no idea what the difference is between a DLX, a base, and an SR5. I also don't know what gearing is in the diffs (assuming no one changed them out, of course). Can someone lead me in the right direction? Appreciate all the help I can get.