well performance offroad closed, so if ya call aint nuthin gunna happen, and ya jeremy is a good guy, infact performance did the lift on my jeep, and i gotta say 13.5" on a jeep is insane...lol... but jeremy is now at lokey crosslander off dale mabry and i275, you'll see it as soon as ya get off. def. best prices in town and if not they'll beat others. great installers for everything. if ya talk to jeremy, tell him Will sent ya. ohh ya and a 8" would clear 37's, but a 6" would def. have rubbing issues and you'd def have to trim the bumpers. shit you'll prolly even have to trim the front plastic valance with a 8" depending on how wide of tires/wheels ya do.... hope that helps