As yet I have no data on the French 'J', 'K' and 'L' models
The same 'ski jump'rear fender used on the GT750 was used on the E4 'M', 'A' and 'B' models.
The 'dog bone' style rear tail light was used through to the end of the E4 production.
The mirrors for the M, A and B models had a stepped shaft as seen to the right. The beauty of this design of course is that there is only one part number (56500-28600) for both sides of the handlebars - its surprising this was not more commonly offered elsewhere.
For the 'M', 'A' and 'B' models, the left handlebar had the same spring loaded 'pass' switch (57700-31610) as used on the E4 GT750 and may be seen in the photo to the right which was supplied by Mick Taylor.
The E4 center mufflers are specific for the 'M' and 'A'.
a Kokusan alternator and regulator were fitted to the 'B'