i have a 94 xj sport, 4.ol ho, auto, np231, 8.25 rear, d30 front, 3.55 gear. custom cold air intake(kindsa like a wrangler would have) 2.5" cat back flow master 40. less than 5k miles on 31x10.50.15 cooper stt's and 15x8 weld racing scorpio wheels(a little over 1600 mounted and balanced) no rear...