After my 31 spline axles did this last year I am afraid to say bullitproof. I did upgrade to 35 spline axles and the big bearing nodular differential. I need to get a backbrace welded in because thats the next possible problem.
http://i212.photobucket.com/albums/cc122/koolrayz/DSC01430.jpg
Got my new drag radials today. These things appear to have over 1 1/2" more contact area than the 10.50 ET drags they are next to.
http://i212.photobucket.com/albums/cc122/koolrayz/DSC01651.jpg
http://i212.photobucket.com/albums/cc122/koolrayz/DSC01653.jpg
Are you talking about making repairs (welding) your aluminum fuel cell?
If so You REALLY want to have that tig welded or you will be having additional issues down the road. IMHO