because your avatar is not a 68 vert?
LOL, just kidding. I have a shop manual for 1968 and it DOES have what you are looking for. In fact both my 68 and 69 have it. Are you sure you didn't miss something?
You're right, I've got to change my avatar; that's my '63 Nova, which I recently sold. I've got the '68 service manual for the Charger/Coronet/Dart. Just found the section (23-77):cheers:. Thanks.