New Go-Buster Magazine Scans!!
 

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Source: 2Ch

The henshin phrase seems to be both "It's Morphin' Time" and "Let's Morphin'"

So yeah.

Huh.

Not only that, Go-Buster Ace is called the Megazord

I remember hearing that is mainly just the enemy giant forms. I won't believe that refers to the mecha until we get a full translation/proof people aren't pulling my leg.

It's not too much of a stretch, but yeah I wanna be sure.