I think this difference relates to an increase in ride height that was required for Euro 4 compliance. Seem to recall Morgan moved the mounting points on the wishbones/trailing arms??
Clue is in the centre-to-centre dimensions and changes in travel...
No idea what has been done with the Ohlin/ATR options for Euro 3 vs 4 but am aware that many of the later cars were reverted to Euro 3 standard but don't know if this reversion included reverting the ride height.
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