[Chevelle-list] Lower Ball Joints

[langus]

I was wondering if any of you would be able/willing to go measure the shaft on your front lower ball joints (mine are 1968) and tell me the diameter at the top and bottom.  My new  ball joints and old ball joints are not the same diameter.  Someone had mentioned earlier about getting the right box but not having the right ball joint inside the box.  I am beginning to think they where on to something.  My old ones measure .790 at the bottom and .636 at top.  The new ball joints measure  .783 at the bottom and   .690 at the top.  The old one has 5651 stamped on the bottom and the new one has 9642 on the bottom (they are both Moog).  Anyone willing to help me out again?  Thanks!     Ryan