Can anyone with a '54 Mercury tell me where the speedometer cable exits the interior through the firewall? I looked at my two '54 Fords and the speedometer cable exits through the right side removeable sheet metal plate which surrounds the steering column tube. The Ford sheet metal panel has a factory stamped embossed hole in it with a rubber grommet and the cable exits there. However, neither of the two sheet metal plates which came with my Mercury have holes in them for the speedometer cable. Thanks, Alan S. Freeman