Well, I don't have one here to check, and the archive photo links don't work. But I think that you cannot do it because there is a boost port at the rear of the cylinder, that prevents you being able to rotate the cylinder. (No matching boost port in the front) I am not sure of this, but just pulling the cylinder off and looking it over would tell you. Another thing, if the cylinder were rotated, the piston would HAVE to be rotated as well.

AV8TOR