Steffan kindly let me offer up a set of XBR crankcases to his Enfield's chassis a little while ago. It was at the time that SimonM was looking for a new bike and mentioned liking Enfields. I got to thinking about how good an Enfield with a modern motor would be (if you can call a 20 year old XBR motor modern).
Anyway, first impressions were that it would be a good fit and everything lined up quite well. It would be nice to go one step further and have a more detailed attempt at mating up the two.
Of course if it works then there's no hassle at all in fitting a 650 Dominator lump into the frame

GC