That too. If it's a 1999XJ, you'll want to find a 1996-1999 (XJ) or 1996-1998 (ZJ/WJ/TJ) donor. Check the head casting number, it should be 0630 (look midway back down the head, on the driver's side. The four-digit number you want should be on the outside of the valve cover, readily visible. Once you've decrudded it, anyhow...)My advice is to make sure you get a donor as close to the same make/model as possible.