The Wilson 4 hole is worth about 14 hp on this combo and the cold intake was worth another 13 hp on that particular test. Realistically this engine was producing a solid 425 hp with 430 lb/ft every test. Icing down the intake was purely for getting some big numbers to print out and have some fun with the 383 Chev guys at the parking lot this summer. 460 ft/lbs from a basic stock stroke 360 does not happen. J.Rob