This 3.15" core flows a whopping 53% more air across the core. Tests have shown as much as a 20 deg temp difference over our previous designed intercooler. This size of core is ideal for this and is large enough to handle 750hp (approx 9.80s in the 1/4). Includes plain finished pipes, hoses and clamps. For an extra $50 you can get polished pipes instead of the plain finished pipes.