As an aside, 1,400 hp means each primary tube in the header needs to support 1400 / 8 hp = 175 hp. Doing the same calculation 175 x 2.2 / 115 = 3.3 square inches. The area of a 2-inch tube is 3.1 square inches, so the headers might be the limiting factor in ultimate horsepower in Unfair.
Working the calculation backwards, we see that the 2-inch headers will theoretically limit the engine to 1,300 hp. Stay tuned. We'll see how that engine turns out on the dyno pretty soon!-John Parsons.