Well guys, I did it this time. I drove my Xterra into some mud and water and sucked it all throughout the engine.
I am in need of a replacement.
I have found several around at different salvage yards but want to know if the 2000 - 2003 use the exact same 3.3 Liter engine. The dealers I called are on strike so they are no help. Anyone know for sure? Any help would be greatly appreciated.

On strike? Who do they think they are, the NHL?

Should be the same engine. As long as you're not converting to SuperCharged.