I believe it can be turned to 6 bolts with these adaptors: https://www.amazon.co.uk/SHIMANO-Adaptor-SM-RTAD05-Center-Lock-Holes-2016-Accessories/dp/B00HZFVGC4
Photos are here: https://www.flickr.com/photos/freshkarm/albums/72157713650850937
Yes, can post at cost
@remrak started
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I believe it can be turned to 6 bolts with these adaptors:
https://www.amazon.co.uk/SHIMANO-Adaptor-SM-RTAD05-Center-Lock-Holes-2016-Accessories/dp/B00HZFVGC4
Photos are here:
https://www.flickr.com/photos/freshkarm/albums/72157713650850937
Yes, can post at cost