Hello, how much horsepower/torque loss do you think there would be in a 470 street (525 hp) build with a 1 3/4 vs 1 7/8 header? The reason I ask is that the dougs headers for a low deck are $200 cheaper than the tti 1 7/8 inch header. But are also only 1 3/4. I really don't want a 2 inch header for a street car. Thanks