Paul,
I received the damper loaned to me by J Smith and i fit perfectly but we do have to machine the small ridge of Tracy left photo 3 to have a straight surface for the perfect fit,the rivet head just cleared or may be a slight machined on side of rivets heads photo 5.regarding the flywheel it does not fit with the damper photo 1&2 so as soon i get some dimentions of the 13-B RX-7 flywheelThere is some photos to show the difference


Jean Prudhomme