GM had 2 choices of U-joints in some of the years mentioned. The other style uses what they call an inside snap ring, this is for the outside snap ring style joint. This is likely the more common one but for anyone looking for a yoke, make sure you have the outside snap ring style (snap ring is visible when the u-joint cup is installed in the yoke).
Also, if you do have the inside snap rings, you can still use this yoke by changing the u-joint as well to what is called a "conversion joint".
And also, this yoke is now discontinued and no longer available from GM.
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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles
1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
