Holley Performance Products and Hooker BlackHeart have partnered together to offer the most versatile and complete swap kits on the market. If you are planning to swap an LS engine into your G-body, it is important to use components that are designed to work together to ensure a trouble-free install that provides optimized drivetrain geometry and component clearances. Hooker BlackHeart has finally made it possible to purchase a comprehensively designed system of components that offers compatibility far beyond what is available when using components from mixed sources while offering more header type, material, and finish choices than any competitor.