Dont know, but the old clip merely catches on the inside rim of the jet body wall fitting which you cant see until you remove the internal. It only takes about 2 mm movement into the opening for the 2 inserts to clear that rim. The scalloped face you see is not the wall fitting. Also note that the 4 tabs in your picture will just rotate the port openings. They dont remove the jet internal. I do have a pic of the clip for the american(pentair) luxury series which they also changed in 1994. It might be the same clip(see attached). You can get the complete jet internal assemply without the jet body for 30-40 dollars, so breaking the clip ring or face probably wouldn't be a big deal if you're replacing it anyway. For confirmation, the 2 port jet body has a large hexagonal nut on the back wall.
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