Here you go, a direct photographic comparison. M05 - M03.
Look closely and all the major components (motor, battery,etc) do not appear to have moved relative to each other.
Rear shock mounts appear identical in configuration. Front mounts are very different - adding more weight to my initial argument that the driving force behind the design of this car was to allow the fitment of lower bodyshells...
The whole 'Lower C of G' thing wasn't/isn't a factor. Getting more room at the front was what they were looking for.