[Porboynz]

Fix the new panels in place with self tapping screws while you check the alignment, then tack weld, then fully weld, job done. I chose to do an overlap weld at the box sections for maximum strength and a butt weld elsewhere. (example front panel behind bumper) Depending on your welding skill a little tidying up with an angle grinder then coats of underseal and all set for fun. Plenty of tectyl in the cavity should ensure that repair outlasts me.