the S&S website has no mention of the X-Wedge motor?
Only parts show up.
I would think that every X-wedge motor is going to Morgan which is why they aren't advertising this motor for sale to anyone else but rather sell their other lines of motors.
https://www.sscycle.com/search/?category=1%7CEngines
https://www.sscycle.com/search/?category=1%7CEngines
https://www.sscycle.com/