2002 grand Cherokee block in 1991 xj?

Hey guys, so I grenades the bottomed end in my 91 Cherokee and I found a 2002 grand Cherokee 4.0 with low miles for cheap. Is this a bolt in swap? Or will I need to do a head swap also? Thanks. I'll post carnage pics later.
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If you use the late mod. head, you'll have to use the late mod. exhaust manifold too. Port pattern is different.
You'll have to use the '91 flywheel/flex plate, distributor, and all the sensors.
Don't remember if the '91 had a knock sensor. If it does, you'll have to drill the boss on the late block to accept the sensor.
If you use the late head/intake combo, you'll have to mod the early accessory drive brackets to fit(I think it's the power steering pump mount with the problem)

If you do swap the head, list the '02 head for sale here as a replacement for somebody's '00 0331 head that popped. Should sell quick.

I think the accessory mounting and brackets changed. It has been done with OBDII XJs, but I don't know the particulars. There are more details on the differences posted on if you dig around a bit.

http://www.naxja.org/forum/showpost.php?p=245178349&postcount=73

edit- this might help too
http://www.naxja.org/forum/showthread.php?t=1015349

they did change. H8PVMNT re-machined one (out of a 99 or 01 WJ, I forget) to fit in his 96.

You can make it fit, but its a bunch of work and not really worth it. Plus you get the earlier 0331 crappy head.

Thanks every one, I guess ill keep looking or hope that the crank isnt destroyed.

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