Is the 1960 engine a 235 also? If so it will rotate clockwise too. To verify this, pop the cap off the distributor, lay it aside, have someone "bump" the starter switch and watch the rotor. I'm a little confused as to why the vacuum advance is on the right. It is possible that the distributor body on the '60 is in the wrong position. You may need to rotate it back to where it belongs and change the plug wires to match the new position.
