My son is now driving my 2005 6mt. He is out of town and it has started making the noise in this video. Anybody have any thoughts what this is? Thanks!!

 

Check the heat shields around the cats, especially the 3rd cat on the J-pipe. Inspect the J-pipe especially at the flex section. Hard to tell but if there's a click noise just starting to move forward or reverse check the axles and axle nuts.

 

Random but your son must've been a newborn when you got the car and now he's out driving it. How time flies!

 

Sounds like power steering pump when I did a complete flush. But it was more constant..

if you have not flushed the Power steering fluid, then you may try to evac the old fluid from the reservoir and then adding a new bottle to it. (without doing a complete flush) it will help, temporarily. Assuming that is the problem