the same 4.0L I6 engine is used for models including all year jeep cherokee xj, as well as most if not all wranglers. the 4.0 will fit in a 2000 xj. most xj engines are 4.0 stock anyway
Yes.
no. the wiring and computers are different.
What Engine 2.5 I4 or 4.0 I6 in pplace of what. It will fit definitely but might not bolt right up The 2000 and 1992 will have different sensors in different places.
The only direct fit is what the factory installed.
yes
No
Yes. Model years 1997-2006 are interchangeable.
No.
Will a 304 engine fit in a 1998 TJ jeep wrangler?
That is no small job, engine controls, transmission, and running gear are all different, but will it physically fit, yes.
No.
It may fit, but it is not plug and play. The computer and trans systems are different.