Here is my stihl 91cc mount it is just longer case bolts through standoffs,I will do the 56cc the same way,ps the mount on the 91 is 5 oz so the 56 should be under 4oz. for even 2 oz. less than the h9 mounts needed for the bme 50 so the bme ready to mount is 3.4 lbs.mine is almost half poud lighter ,way cool is it not

Darin