With leaf springs running parallel to each other a track bar is not required unlike a vehicle running coils. You may notice a difference. I did a 2.5'' with a 1'' shackle and am no longer running track bars. It most likely will not fit with the 2.5'', as when I installed the 2.5'' with the 1'' shackles it was far from fitting. Keep in mind, you would need relocation brackets for front and rear.
93 YJ, Black on White
United States Navy
[URL="http://www.jeepforum.com/forum/f22/17-year-old-dream-1146581/"]Build Thread- 17 Year Old Dream[/URL]