Ok truck has 330,000 miles started noticing a howling noise at idle it's really pronounced at the oil pan when driving it only makes the noise when it's in gear between 1000-1500 rpm the noise is more pronounced when cold and not as bad when the motor is warmed up any help would be greatly appreciated !!

You know for sure it is coming from the oil pan? What does your oil pressure look like? What level is your oil at? Hope you didnt spin a bearing or something like that. I have never heard of an oil pump failing on one of these but I guess that would be possible to.

The oil level is fine !! And do I check the oil pressure at the port on top of the oil filter ? And what are the symptoms of a spun bearing ?

so I had time to tinker around I can hear it near the. Back of the engine I put my hands on the fuel lines and one set was vibrating really bad hmm I'm stumped 

What kind of fuel system do you have on your truck? It would be helpful If you fill out your signature as to what truck you have and any modifications you have done to it. You can do that in your profile. That way it will appear on every post you make.

It's a airdog 2 165 and I filled out my bio 

 Does the pump have a problem? I am asking because the fuel line should not be vibrating as you describe. The fuel line might be transmitting the noise. Not sure just spit balling.

 If you look at the bottom of my post you will see my signature. It appears on all of my post so everyone knows what I am running. That is different from the bio. Not trying to beat you up it just helps.