hello guys i could use some help on this engine on it's value and displacement ,,there is a picture with a 45 mds engine for sizing the hoernlein ,the engine has been run some but have no idea of how much i am just trying to get an idea of what it's worth to so i can list it to sell ,it dose not belong to me i am selling it for a good friends family since he has passed away ,,i have posted it on another site (meca) but have gotten no response so far so any help here would greatly appreciated or direction to were i can get info thanks