It took a long time but our supplier finally got this bushing right. They ended up copying a never installed production original bushing Ed Meyer acquired from the Kar Kraft factory back in the day. All details have been copied including the two small ribbed lines located on one side.
NOS Bushing notes: If you have NOS C9ZZ-5493-A front sway bar bushings in a Ford bag good luck making them fit. Yes, its a documented fact that almost all NOS 15/16" sway bar bushing Ford sold in a bag are too small. Our supplier has speculated how this could have happened but can't come up with anything solid. It may have been that Ford tried to simplify their service parts inventory and substituted a bushing they had in stock that ended up only fitting on paper or maybe they just miss-bagged them.
Install notes: Face the slit opening towards the back of the car.