Want this question answered?
Yes, some will be.
no
No. They are not interchangeable.
The most compatible and completely interchangeable transmission that can be used with a 1999 Jeep Grand Cherokee Limited is the 45RFE transmission. This is from a 2000 Jeep Grand Cherokee. Only this model year is compatible with the 1999 model year as the vehicles shared 127 of the exact same parts.
If you are asking about rear axle gears, no. The XJ has a corporate axle and the ZJ has a Dana axle.
To find out if a 2000-2004 Jeep Grand Cherokee power steering gear box will fit on a 1999 Jeep Grand Cherokee, call your nearest DIY auto parts store
I have a 2002 Grand Cherokee. I've had to have both rear replaced and each was around 300 - 400 for parts/labor.
No.
Everything
2000
Yes, they are both 5 on 5.
Your 2007 Jeep Grand Cherokee 16 inch aluminum wheels will fit on to the 2000 Jeep Cherokee Sport. Any wheel larger than 16 inches will not yet on to the 2000 Cherokee.