I didn't like the packaging for Kato's FEF-3's so I used the large jewel cases the aux water tenders came in and just cut out certain sections of the foam to fit the steamer.
I did use the softer bottom foam from the original box's and cut them down to fit the jewel cases.
Also cut out a small section at the top left for the extra pilot for double heading.
These are the same jewel cases Kato used for their GS-4 Daylights.
I then used four smaller jewel cases, cut and fitted foam liners for the aux water tenders.
Ernie