'''I would think so - '''but you'd be on your own, t''here is no guide (you could make one as you go along)''
Original Cube Dimensions: 9.8 x 7.7 x 7.7
Original G4 mini Dimensions: 2.0 x 6.5 x 6.5 ( so it should slip right over the logic board - getting the optical drive to line up could be a challenge).
Newest mini Dimensions: 1.4 x 7.7 x 7.7 (NO optical drive)
Good luck,
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