I helped with the initial mock up of that sway bar for Helwig. It took three bars to get it spaced in the k-member to may liking and have room for a 1 1/4" option too. Checked on two 73-76 K-members. I've got a 1 1/4" prototype version with no rubbing. It is not just a copy of the stock sway bar made thicker.

I'm having computer problems and can't access my pictures.

Can you post a picture of it and where it hits?

Do you have the bend in the middle pointing up or down?

If it's hitting on the top, can you spacer/washer it down for clearance?

Most k-members have been wacked in the bottom.