os is synonimous for ease of tuning, useful power and reliability, I bet that 1.35 claimed will be more than 1.40 and plus if tested. unlike italians that claim 1.52 and peak at only 1.4 (except collaris .12 recently tested) for my track the tz will be the natural choice since I just broke the conrod and sg shaflt on both of my sirios evo 2, 3 and 5 port without any reason whatsoever. quality and reliability again!
thanks for the pictures, Hopefully it will be lower than 160 in the us