I have a 4.0.
I looked around and some state that it's a direct swap for 99 on. There couldn't of been drastic changes from 98 to 99 could it?
The engine comes with an auto trans. Mine is manual. It is also complete with alt, starter, pw steering, etc. I have to find out if the computer is included. I doubt if the wiring harness is.
The guy took it out to replace it with a bigger engine. I have 128K on mine and was thinking of getting a reman engine soon, but this would be cheaper if it fits plus it has low miles.