Colour, engine... and confirmed by the portside straps for the flexy tank Max!
Jeff the 380s were all shortshaft regardless of age but the rare-ish 420 was a longshaft and had a transom with a flat top rather than OB cutout.
I know in the past camera lens distortion has made it hard to judge LS vs SS OBs in advert images but if a SS that's one hell of a transom lift and I'd expect lots of cavitation.
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