Well, that worked out pretty good actually...
Found some scrap steel just a touch thinner than the stop on the A arm, cut it to size and butt welded it onto the end extending the stop about the thickness of my finger.
Can just fit my finger between the edge of the tire and the frame at full lock now.
Left a little wiggle room for tire deflection just in case. I must say, it is going to be nice being able to turn to the stop without having the tire dig into the frame once again...been YEARS since I could do that.
Now onto mounting up the tube portion of the sway bar...