k I have two bars that are not stock in my rearend. On the left and right there are 2 bars that go from the frame to the rearend. And then one that long ways that goes at an angel from one side to the other that says eddlebrock if you know what these are let me know thanks.

 

the two going from the frame to the axel (1 on the passenger and one on the driver's side are your lower control arms, and the one going at a diagonal is more than likely the panhard rod/bar.

Both things are stock equipment on fbodys, yours might just be upgraded.

 

Yea I had a parts car and they did not look the same mine have more meat on them.

 

It's quite common to upgrade the lower control arms and the panhard bar.

 

what dose it help

 

Along with the torque arm, those three bars hold the rear end in place. Upgrading them adds strength and stiffness, which permits harder and more consistent drag launches. Depending on exactly which ones you have, it can also might allow you to adjust the position of the rear end.

 

ok so than thats good