Grommet for Throttle Valve Lever & cable
 

When I took off the throttle valve body on my 1988 Colony Park, with the 5.0 L motor, the plastic grommet on the throttle valve lever, that holds the throttle cable in place, disintegrated. Is this grommet still available at Ford Dealers, or is there another source for this part? I've thought about using a simple "c" clip instead.
Any info you can provide would be a big help!

Thanks,
Bruce:)