'67 Dart with '68 idler arm?

RedFish said

The 67 tab is right in the middle of where a 68 arm would ride so optimal solution is remove that and add the proper 2 ear clip. Most would simply leave the 68 up arm attached below the 67 tab and add a second tab below the arm though. This doesn't cause any issues. A little ground clearance difference and angle of center link is all.

Click to expand...

Ah. Thanks. So I thought. Here's the issue. Moving the idler (or pitman) position will cause the toe to change as the right (or left) wheel goes up and down. This because the tie rod's arc doesn't follow the control arm's. There's a Direct Connection bulletin on how to check and adjust (by shimming or filing at the attachment point). Reprinted in the MP Chassis an Oval Track books too. on-line as scan here

Whether it is no biggy or something of great importance depends on use and driver/owner. Obviously I drove my '67 with different arm drops. Wasn't happy about having the wrong one, but at the time couldn't do much about it.