The 6.0 Power Stroke is pushed back pretty far under the firewall. How far? Far enough that many times, the cab is lifted off of the chassis for major engine work. That's not necessary for installing the ATS turbo kit, but installer Dave Briggs still had to put a pad over the core support and stretch himself out to reach the top of the engine where the turbo mounts. In this photo, Dave has already removed the stock turbo and is temporarily removing the stock ECU to buy himself a little more room to work.