The 14's shrouds attach to the tramp sidebar; the 16's attach to an anchor bar underneath the hull's deck lip.

If you put a 16's rig on the 14, you'd have to change the attachment because of the load. The sidebar is barely strong enough for the regular 14 rig. I'm not sure if the 14's deck lip is strong enough.

You'd better have a good dolphin striker set up on the front crossbar, too.

The bridle attachments are different, too.