Cummins does make some engines which will, such as the 3.9 liter 4BT... if you're thinking of the 5.9 6BT or ISB or the 6.7 ISB, those will not.
there really is no difference in the engine it will be the computer and electrical connections
No the engine will not interchange.
I bought a 92 Jeep Laredo and found it had a 1994 jeep engine in it.
The 2014 Jeep Cherokee has an inline 4 engine.
Not with out major modifications.
The 2010 Jeep Grand-Cherokee has a V6 engine.
The 2006 Jeep Grand-Cherokee has a V6 engine.
The 2013 Jeep Grand-Cherokee has a V6 engine.
The 2009 Jeep Grand-Cherokee has a V6 engine.
The 2007 Jeep Grand-Cherokee has a V6 engine.
The 2012 Jeep Grand-Cherokee has a V6 engine.
The 2014 Jeep Grand-Cherokee has a V6 engine.