To close out this thread: I attempted to use some .25 spacers along with my slightly modified stock sway bar mounts. Although the combo would have been slightly lighter than the Hellwig supplied mounts I would have had to modify each spacer to fit the curvature and space available under the K frame mount points. Was not worth the time and trouble. I reinstalled the Hellwig brackets and checked the interference points by sliding a strip of paper between the bar and K frame. One side cleared and the other was touching just enough to stop the paper. I will recheck the clearances once the car is together and everything is torqued down appropriately. Thanks again for the your perspectives and info.