'67 Dart with '68 idler arm?

Here's a photo (hopefully) of two stud type arms that were used on my '67 B'cuda. I am not sure which is correct - my guess is that one may really be for the early A- kframes.

Length of both is the same as yours. It's the drop and angle that's a bit different between them.

Also here's a link to the firmfeel modification, but other than the photos for ID. it doesn't look like it will help you.
http://www.firmfeel.com/a_body_mopar_idler_arm_bearing_kit_1.html

I can't recall if the '68 up uses a larger diameter bolt than the threads on the morse taper stud, but I doubt it. You'ld probably be fine with a '67 arm. Easy enough to measure before hand.

It will be very interesting if you find the '67 placement is the same as the '68 up. My recollection is that the '67 bracket sits lower than the top tab of a '68 up, but maybe that's wrong.

In any event, whatever change you make in drop will effect toe. So, plan on adjusting that when your done. Tape measure on the tires or strings on each side will get you pretty good if you want to DIY.