For High Horsepower application get the Anti-Roll Bar with billet arms. The twin tube anti-roll bars will reduce flex even more power (up to 3000). TRZ Arms are tig welded chrome-moly construction make them strong as well as light. With a 1 5/8" diameter bar the ARB will keep your launches strait with more effcient weight transfer and no body roll. All TRZ Anti-Roll Bars come with Chrome-molly teflon lined rod-ends. Welds between stock frame rails or rear cage downbars.