Take a look at this beautiful 1955 Chevrolet Nomad with a 529 WHP supercharged 6.1L V8. This project is a good example of using quality products and mechanics. The car was taken to an experienced engine tuner who realized there was something off causing the engine to produce less horsepower than it should. The problem turned out to be some bad injectors and after switching to GM LS9 factory injectors the engine made 129 more horsepower.
Source: LS1Tech