ʻOku ʻikai feʻunga ʻa e moto ʻo e kasa ki he ngaahi ʻatakai ʻoku fie maʻu ki ai e moto ʻo e efu. ʻOku tupu ʻeni mei he ngaahi tuʻunga moʻui kehekehe ʻo e ʻuhila ʻoku nau pikitai ki ai: ʻOku talangofua ʻa e moto ʻo e kasa ki he GB3836, kae muimui ʻa e moto ʻo e efu ki he GB12476.
ʻE lava ke ui ʻa e moto ʻoku ne feau ʻa e ngaahi tuʻunga moʻui ko ʻeni mo e ngaahi sivi ki he tokotaha takitaha ko ha moto ʻoku fakaʻilongaʻi ʻaki e fakaʻauha. ʻOku mahuʻinga ʻa e ngaahi moto ko ʻeni, fakaʻata ʻa e interchangeability ʻi he ngaahi ʻatakai ʻoku fie maʻu ki ai ha kasa pe efu ʻo e ngaahi tuʻunga moʻui ʻo e fakamoʻoni.