Can someone shoot me straight on an idler arm question?

1..The box has to fit the pitman arm because of spline size
2...Then the pitman, center link and idler all have to be same, either 68-72 or 73 and later because the tapered studs were changed and point the opposite way.

Look at your two idler arms. the tapered studs are opposite, the new one does not match the old one. The old one DOES NOT APPEAR to be a 67. 67 idler has TWO TAPERED studs as the bracket only has "one ear". I would bet you had a 68-72 K member already???

Post 2.........

confused, steering gear compatibility

Early up through 72, the studs point UP

old-jpg.jpg

Late, 73 and later, studs point DOWN, and normally "big spline" box