I had something similar happen to my 2000 this summer. It turned out to be the cam posistion sensor had been rotated out of wack when my oil pump drive seized up (thanks Brian C). I got it to start up a couple of times after, but it was never the same. Check to see if the oil pump drive has been rotated out of position (you can see this clearly as there will be marks where the retaining clip held it down. Here is my post on what happened to mine:
http://www.naxja.org/forum/showthread.php?t=86834
hope this helps. B.C's post is the 3rd down that led me to a fix eventually.