I don't know if we're being realistic or not, but we're hoping to pull around 1000 HP out of the motor. According to testimonials on the 440 SOURCE website a lot of guys were making 750-800 HP with this stroker kit on normally aspirated engines. We are hoping it will be reliable enough to still be a daily driver. Some of the components we chose to go with (such as the chromoly rockers) were picked for strength and reliability over horsepower potential.