I took a closer look at things and it seems everything is packed so nicely that it's hard to throw anything out. This was the High Sierra Pale Ale kit from homebrew.com.
Doing a little poking, I read somewhere about DME lasting for about a year before it starts to degrade if packed well. This stuff is packed very well and is airtight.
I also read about hop pellets lasting about 1 year if packed in airtight containers and refrigerated. These were airtight but kept at room temp.
I just ordered new grains since they were only about $1.55, anyway.
Also, ordered some new liquid yeast and Star San.
I figure I'll use the old carbtabs and/or priming sugar.
I looked and it turns out I ordered this stuff exactly 1 year and 7 months ago. My guess is the extract is fine but the hops are questionable. I guess I'll give them a smell and see how fresh they smell before brewing, but at this point, I think I'm going to try to use these ingredients. I guess worst case is it will be a waste of my time (hopefully nothing lethal will result