OK, I just checked out the pics on their website (http://www.calvertracing.com/info/info.htm
)...no spring in the horizontal link.
They look just like a Traction Master with the exception of the front mount. A TM has its front pivot attached to a small plate that welds to the rear subframe. Plus a TM is not adjustable in length (but could be made so with a little work).
The CalTrac uses a set of triangular front "shackles" just like I was planning to do with my modified TM's. But instead of using a set of triangular front plates to pin the rotation to the body like I planned, the CalTrac uses them to translate rearward motion of the link into rotary motion of the front mount upwards into the spring to resist "wrapping". That make any sense?
-The Caltracs are adjustable in length, but by how much? If its 1" or more, I'd get a set for a '65 Mustang and do whatever adjustment you need. The TM's I bought for a '65 Mustang were not off by more than 1" when placed on my CBII.
-The aluminum front bushing is designed for racing and will be rough on the street. How much street driving will this car see?
-E-mail him and ask about you application. He may have already made a set for the MII. If not, he should have the specs of his various models and be able to match them to the specs of the MII rear springs.
Whatever you find out, please let us know!
Now I just have to figure out where I saw the TM-style traction bars with the spring load in the middle!