Been looking to upgrade the turbo, but im trying to stay stock appearing. one question is, is the danville 72mm stock appearing like the 71.5 cheetah? looks a tad different but im not sure. also which has been proven to perform better, danville 72 or the cheetah 71.5? reason why is because the work stock classes i pull just have to be stock appearing, also can these turbos pass for 2.6?