May sound like a stupid question; but it is

jawbone said
Purchased new idler arm for 68 Barracuda. Installed in vice but arm will not pivot on bushing. Not sure what the outcome will be once I torque it to the K member flange. No grease cert. Does it pivot on mounting bolt? Have read a number of threads on this but no resolution. One member threw his in the trash. If it's this hard, then may be worth purchasing one with bearing modification.

It pivots on the mounting bolt. The idler arm should not turn on the bushing itself.

jawbone said
Problem resolved. Purchased BAC idler arm w/bearing.

This is a great piece, it was a noticeable difference in the amount of drag in the steering on my Duster. Especially when changing directions.

Just a note, you will likely need to adjust the idler arm mounting flanges in order to install this successfully. The pivot bolt torque is pretty high, the mounting flanges tend to get pinched in. I had to expand the flanges on my K to get the proper fit for the bearings. I'm sure this isn't an issue with all K's, but given how the original parts work I wouldn't be surprised if quite few of the mounts needed some tweaking.