This is the post that made me concerned. This is a 2000 if that makes a difference.
Since your jeep is obd3 it will have to read as your vin on the ls computer. It can be done, i have a friend with a ls miata that passes the motor computer vin check. As long as they plug it in and it reads no codes it will pass de emissions.
There is a crap ton of info on the web for this swap. U will have to decipher what is good and what is not.
This is the post that made me concerned. This is a 2000 if that makes a difference.
FTFY 
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Quick question: I'm looking at a Cherokee that's for sale and the motor was swapped a while back. It has the same 4.0L I6 that came in it originally just new. The computer was also swapped at that time. I'm concerned about the DE DMV scanner showing a different VIN. Is that something I need to be concerned with?
The owner is unsure what if any VIN it will show.
Thanks!
Won't matter to DMV.
You may get a light on the dash because of a VIN mismatch between the PCM and the cluster. It's stored in both.
Doesn't really make sense.
A Jasper rebuilt wouldn't usually include the PCM.
KBB is telling me it's private party value is $2518 - and that's taking into account the mileage, oversize off-road tires, aftermarket bumpers, and the winch. Sort of depends on how badly you want THAT particular Jeep. 
KBB is telling me it's private party value is $2518 - and that's taking into account the mileage, oversize off-road tires, aftermarket bumpers, and the winch. Sort of depends on how badly you want THAT particular Jeep.
Not bad enough to over pay for it!
Doesn't really make sense.
A Jasper rebuilt wouldn't usually include the PCM.
I asked: was the computer changed?
IE if I take it through DMV will the VIN show same as the windshield
Seller: The computer is a remanufactured unit don't know when it was installed....should show same vin but I really couldn't tell you that
Jeepman John bought a non running XJ from my buddy, put a used computer in it, it fired up, he fixed a few other things, got it inspected and tagged no problem. It was a '96, though, so not OBD3, but still had OBD to plug into. You might be right to avoid this 'deal' though 
You might be right to avoid this 'deal' though
That's what I was thinking. The hunt continues!
You may get a light on the dash because of a VIN mismatch between the PCM and the cluster. It's stored in both.
No, you won't get a CEL.
This is the post that made me concerned. This is a 2000 if that makes a difference.
Just to clear up the misinformation there is no obd'3'....there is an obd2b or eodb2 which are extensions to the original obd2 protocol introduced in '96 A 2000 would be obd2 and, like I said in the thread that this was quoted from, DE does not verify the VIN stored in the computer.
If it was a good deal I'd say buy it but the price seems a little high to me.
--Ian
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