There are several versions of fitting the rear plastic mudguard shown on TM. I think this is one of the best and well detailed Smaug. The only real difficulty with it may be using the lower shock absorber mounts for the support bracket, depending on which way the bolts are fitted it could mean removing the fuel tanks to get them out. There is not enough swing arm movement to get them below the tanks, at least with the NVH kit fitted. I have used the axle adjusting bolts to mount the support bracket and it seems to work.

http://www.talkmorgan.com/ubbthreads.php/topics/294278/Rear_wheel_Mudguard#Post294278