68 cuda front suspension questions

Large washers are used inside the bracket.
The idler arm should fit snug and have no up and down play when bolted in place.
Unfortunately the 68 and 69 parts manuals show the 67 version of the idler arm in the exploded view. The 67 mounts differently than the 68 and up models.
The factory 68 service manual doesn't show enough detail either.
Hope this helps.