I would think the extension is needed to get the pick up deeper in the pan.
Seems like the pan, not the girdle, or non girdle, is the issue.
Don't know where to get the part, but I would think it would have to be welded in place and any fabrication shop should have some tube around that should work as and extention. I would personally clean the part after cutting and then again after a nice clean TIG'ing.