I think what I am going to do is just try and cut the stock mount off the column and save it (it sits at the wrong angle now) or do the flange idea with button head screws as long as the mount covers my hole well enough. It will be very difficult to see because it will be low on the toe board like you mentioned, Bob. as far as the hole...the column is 2.25 and the hole is a hair bigger than 2.5 so that shouldn't really be a problem as long as the mount covers it and its sealed up good with a pad. Part of the reason I want to leave the hole alone is because the bottom of the floor was coated with bed liner before mounting to the frame for the final time.