NEED IMMEDIATE HELP!!!!

so I have a noise coming from the back of my truck when ever I am at low speeds and pressing the gas pedal. Got home and looked around at everything and saw that a piece of my rear drive shaft where it connects to/holds the u-joint is broken off. I am thinking that is the problem plus the way the back of my truck sags (new suspension for all 4 corners is enroute already). But if anybody else has any ideas I am open to them. Plus, where do you guys get your driveshafts from? The cheapest one I have seen so far was a Dorman driveshaft from RockAuto for right around $250.

 

Check for drive shaft shops nearby, they'll be able to weld and balance it for you.