This is an overall view of the structure beneath the engine fairings. Each of the cone-shaped fairings has a radius of 101.17 inches or about 8.43 feet. The center of the radius is the engine gimbal point which is 17 inches from the outside edge of the thrust structure. The engine gimbals are 90 degrees apart on a 182 inch radius circle centered on the center engine gimbal. The pipe visible at the bottom of the graphic would not be on a flight article nor would the small scoop just above it at the base of the cone fairing. Quadrant III is up, IIII is to the right.