Was wondering if anyone had any idea the difference in track bars for a 1998 expedition....one made for air bag suspension or without air bag suspension. I'm assuming the one made for expeditions w/o are made with heavier gauge steel. Are the dimensions and the holes for the bolts the same for both tracks bars? I replaced my 1998 EB airbag suspension with stiffer torsion bars(7's) and Rancho 9000xl's with 4" lifts. So, do I go with the track bar made for expeditions without airbag suspensions?