It's not bad, but your best bet is to get stuff out of the way first.
1. Remove your battery completely - It's juts simpler and give you somewhere to set stuff.
2. Remove the Alternator Bracket - JUST THE BRACKET, do not even loosen the alternator bolts, just get the bracket out of the way or you're going to have to mess with the tensioner, and that's just more trouble than it's worth.
3. Remove the fuel head assembly & filter complete. Just disconnect the plugs, unscrew the large brass screws (watch out for those washers!), then remove the 2 small screws on the firewall.
4. EGR elbow. This one is the real pain in the hindquarters just because of the location of it all. I would recommend at minimum 2 wobble connectors just to make things simpler. You're going to need an extra set of small(er-ish) hands to assist possibly as I couldn't fit my meat hooks in there very easily, but you can lay on the ground and reach up to disconnect the back side bolts or you can actually also reach underneath and do them if you are small enough and have a delicate touch.
The Plugs aren't hard to remove, once you pop all 4 electrical connections, go ahead and soak all of the glow plugs in PB Blaster and walk away for 20 minutes.
Work them easily back and forth until they are not racheting your ratchet any more, then use a 3/8" (Radiator works) hose taped to a stick/straw/something firm and turn them the rest of the way out, the 3/8" hose will keep them from hitting the sides or falling out of your hand and breaking the efeminite tips off of the end of the glow plug and falling into your cylinder, which is really bad.
I would recommend anti-seize on the ones going back in.
Oh yeah, order one of these, you're going to need it: http://www.idparts.com/catalog/product_info.php?products_id=2769
If you're getting the 7v drop in Etecnu's, then replace and reverse your process. If you are changing to 5v, this is where ship your ECU to GDE for the 5V tune or have your Jeep towed to the dealership for a flash & crash.
It really is that simple, it's too bad it takes a few hours to do.
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