yes they will
No.
No. They are not interchangeable.
The 2011 Jeep Grand-Cherokee has 36.3 cu.ft. of cargo capacity with all of its seats in place.
The 2002 Jeep Grand-Cherokee has 39 cu.ft. of cargo capacity with all of its seats in place.
The 2012 Jeep Grand-Cherokee has 35.1 cu.ft. of cargo capacity with all of its seats in place.
The 2008 Jeep Grand-Cherokee has 34.5 cu.ft. of cargo capacity with all of its seats in place.
The 2003 Jeep Grand-Cherokee has 38.3 cu.ft. of cargo capacity with all of its seats in place.
The 2004 Jeep Grand-Cherokee has 38.3 cu.ft. of cargo capacity with all of its seats in place.
The 2009 Jeep Grand-Cherokee has 34.5 cu.ft. of cargo capacity with all of its seats in place.
The 2007 Jeep Grand-Cherokee has 35.0 cu.ft. of cargo capacity with all of its seats in place.
The 2010 Jeep Grand-Cherokee has 34.5 cu.ft. of cargo capacity with all of its seats in place.