You may wind up having to make it out of steel.. When you posted I recognized the part but wasn't 100% sure it's power window E & 71 up B body only but at this point I think thats pretty clear... You might be able to sandwich a couple pieces of 12 ga or 14 ga sheet metal to make the proper shape & act as a spacer like the original part... A couple plug welds would keep it squared up & it wouldn't ever break again...