Aussie Duramax, What is your goals/setup if you don't mind my asking? These heads are top shelf!
Lbz, built trans, efi by Danville, Danville 68, full egr delete, mbrp down pipe, 5" mbrp to 7" stack, ppe guages, custom traction bars, airdog2 165, ppe fuel rail mods, s&b, afe blade runner, Arp...