Because there is no LJ body code. The body code is the base by which you order all parts through the dealership order system. If you pull up a radiator as a part on the dealer screen, under it there will be various codes by application. There will be TJ, domestic and export codes and then the code for long and short wheelbase and then codes for trans options. At no point in any of those is there and two letter decriptors or codes with the letters LJ in them because it is not a model, sub model, or body code. As much as you don't want to believe that, it is very easy to prove me wrong. Just post up the screenshot from any dealer's computer order screen showing any body code from 2004 to 2006 that shows the LJ model or body code.