I'm underneath my truck trying to get the ball joints replaced and noticed a ton of oil on the bottom of the engine. It looks like its coming from this hose. I don't know what it is, or if it's an easy hose to replace, but I'm not sure what part to ask for at autozone. Anyone have an idea?

 

where does it end up at

 

Get some degreaser, clean all that up and you'll be able to pinpoint where or what is leaking.
Before spraying any though wipe the hose and see what colour the liquid is. I'd say its a trans cooler line but you have a manual trans.

 

Looks like Freon! Does that go to the air conditioner compressor?