By "still good" I mean there is no crack to weld. How does one add a stiffener plate behind it without tearing everything apart? Is it accessible from the inside? Just trying to make sure I don't have an issue after the resto.
I did mine when I was replacing the quarters. I used a piece cut out of the old quarter and removed the cage behind it and welded it in around the perimeter and also with a couple plug welds in the middle area. Then welded the cage back in.