Scuttle panel, is the steel panel that the wiper spindles protrude, and spot welded to the windscreen aperture, is this the part that you mean?
Or do you mean the plastic scuttle covers that cover the wiper motor etc, under the bonnet..
If you want the the steel panel, then you either have to fabricate a new section, or cut out a better section from a donor vehicle, and weld into place...
Plastic covers may still be available from the like of GPC etc..
Thom