How to get 1500+HP

Doogievlg,my personal experiance with hemis. I ran a 426,warmed over, in a 64 plymouth for bout 25 years as a family toy,daily driver. With minamal maintence. I also have a 06 charger r/t. One evening far from home it decided to drop an intake seat. Took out that cylinder and damaged others. Still dont trust that car.