Skipjack is out in America, and it has been noted that the manufacturing error with Rampage was fixed (I didn't realise this, but the waist/engine part is on the wrong way around), so that it looks right in both modes.

It isn't too noticeable in robot mode, but in vehicle mode, the front (black) part of the radiator/engine is significantly different in sculpting, and needs the flat surface to look right.