Getting ready to swap a 5.7 into my 73 Dart Swinger

Socket size is 1 1/6. The sway bar should bolt on, not welded. The four holes(two each side) that are through the flange in the "u" part on each side, is where a small piece of channel bracket bolts to. Then the sway bar bolts to that. The bar snakes through the center of the K member.
It was definitely welded...the sway bar I mean.. Reworking a lot of this engine bay is killing me on time but I'm just working the small stuff out then I'll patch these holes that were made for the big block they had and shoot it with some paint tomorrow. I'll eventually have to address that fact that all the suspension is shot out every bushing and I'm having a bad feeling about putting any of that stock stuff back in...