For sale on Craig's list: NOS Lower Idler Arm Bushings for 1966 Ford Fairlane/Mercury Comet, Ford Part Number C6OZ-3358-A. Original Ford parts in original packaging. Never installed.
Asking $5 plus shipping, or pick them up in Southern Maryland.
https://smd.craigslist.org/pts/d/idler-arm-bushings-for-1966/6533061041.html (https://smd.craigslist.org/pts/d/idler-arm-bushings-for-1966/6533061041.html)