So I pulled an 00 0331 off an 01 XJ yesterday. There was no oil in coolant when I drained it, but a little leftover coolant got in the lifter area when I pulled it. I pressure washed the head and don't see any cracks in the valve cover area, but do notice 3 hairline cracks coming off these coolant ports. I did see that #2 and #3 intake valves let water shoot through, so it definitely needs a valve job. It's just that I can pay $250 for a valve job or buy a reconn'd one off ebay for $325. This digi camera sucks, so forgive me if they don't show the cracks: