Steering column firewall brkt

I have a '67 that I am putting a newer column in. I noticed that the 67 firewall brkt is 2.5" in diameter and my new column is only 2 1/8". Does the 68/69 have a smaller hole in the bracket?? And I if so, does anyone have one or know where I can get one? Pic is of my 67 brkt.

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Did you have the rubber gasket installed in the plate?