If you have a 6 cylinder you will most likely have a Dana 35 or Dana 44
If you have a v-8 you will have a Dana 44
If you want to make 100% sure just call your delaer and have them run the options list all you need to tell them is the last 9 didgits of the VIN.
Rear of the jeep
YesYes
The front and rear axles are differentials.
No, the rear fluid comes out of the front reservoir.
It is under the back passenger rear seat.
Dana 35 or Dana 44
Some do, some don't. If it does you can see it at the rear bumper.
Rear wheel, and possibly four wheel drive.
6.5 Speakers both in-front and rear
It's a ring on the turn signal stalk.
The 2008 Jeep Grand-Cherokee has 58.4 in. of rear shoulder room.
The 2010 Jeep Grand-Cherokee has 39.3 in. of rear head room.