I'm quite late to this party, but I'll give my feedback anyway.
The JBG mounts move the motor as you all know. My issue with them was that I had to remove an unbelievable amount to material on the to get them to fit the SHP block.
The Autofab mounts only required minor modification and keep the motor in the stock location. Once you get the rivets removed (which is not too bad with the right tools...but hell with the wrong tools), the autofab mounts were smooth sailing and worth every penny.