DPPtHGSS: Any way to use Gastro/Shellos Beta Sprites?

[theSLAYER]

The beta sprites are in the game,

And I know how to hex edit of a .pkm file to get Spiky ear pichu, Curse forme of Arceus, and Other formes of castform outside battle,

But I can't seem to get the value for Gastrodon/Shellos.

So,

Is there any other way to do it,

Or am I missing the values?

EDIT:

For Pt. The sprite is programmed into pl_pokegra

For HGSS (jap), it is programmed into folder a,0,0, file number 4

[Poryhack]

Because the sprite is just beta material that got removed, it's not tied to any PID values. There's no way to get it.