62 Lancer Vs 68 Dart

All A-bdy rear suspension and rear axles are interchangeable '62 - '76. Of course there is the issue of driveshaft length, dependent on which trans and rear end you are using. Some of the forward rear leaf spring eye bushings are different sizes, also some of the spring eye bolt diameter.

In '67, the A-bdy platform was widened 1-1/2" total, or 3/4" each side. That said, the front suspension components are also completely interchangeable.

There are some caveats. The '73 - '76 upper control arms used the large ball joint than on the '62 - '72.

I would also recommend you keep the lower control arm matched with the same spindle / lower ball joint as there were some minor changes in the steering stops. Consequently, depending on the combination of parts, you could end up with either more, or less, total steering angle.

There are six different center links;
'62-66 S/6 and V8 (narrow body)
'67-72 S/6 and V8 (wide body)
'73-76 S/6 and V8 (wide body)
You can use a V8 center link with a S/6, but not the other way around.

All torsion bars are interchangeable.

Bottom line is it is very easy to make any factory parts combo work.

I don't recall all the details off the top of my head. I would strongly suggest the Tom Condran and Frank Adkins books for the definitive answers.

Hope it helps,
Mike inFL