Anyone use a QA1 K member on a 74 Duster

I have a question so I can get a bit more educated the whole year issue with the K members. From my earlier quote post

"In 73, Dodge changed the engine mounts and brackets. Our K-Member will fit, you would just have to buy 72 engine mounts and brackets. The engine mounts you can buy new for pretty cheap, but the brackets you would probably have to find used"

So does that mean engines from 73 and up have different attachment points the than previous years? Just trying to understand the design or where the compatability issue is. The QA1 works with 67-72 A bodies by their website info. So an engine from 73 and up wont fit properly. SO what if you have an engine from 67-72?

The engines don’t have different attachment points. The change was strictly in the style of the engine mount and the K frame attachment points. The biscuit style mount was replaced with a spool style mount.