Sway Bar yes or no

Also lets keep this fire going... who wants to share what they know about rear sway bars!!!! lol. I've read other posts, and saw disagreements over stock ride height vs lowered but no specifics to rear sway bars relating to lowered cars.

If these are bolt in I'll wait, if there is fab work I need to consider it it now.

68 Barracuda,
Here's variables: