Fallout New Vegas DLC question

I own the Ultimate edition on the X360. I installed it and the DLC on my X1 but there are two packs apparently that need a code. Classic pack and couriers stash. Are these separate DLC from the ultimate edition or are they just no longer available?

Those are just some item packs, and the stuff you get in them is nothing special. Not positive, but they might have been pre-order bonuses? Content wise though they add nothing.

Courier's Stash is a compilation of all the pre-order packs that were available, including the Classic pack. They just give you some items at the start of the game instead of starting with nothing.

That's right. I remember I bought one of two of them separately to help myself out - as I found the game rather difficult at first!