Yes.
anybody can do it
No. The engine does not need removed to replace the transmission.
The block and head will work. The manifolds, wiring, fuel injection, are different.
How do I replace water pump on 2004 jeep grand Cherokee
Yes. It's the same setup.
Labor cost lifter for jeep cherokee
Where is the fuel pump located on a 1985 jeep cherokee
How to replace spark plugs in a 1989 jeep cherokee?
YES
No.
Jeep grand Cherokees are normally more $ than regular Cherokees, the grand Cherokee was originally made to replace the Cherokee
10w30