But some weight is necessary and some added weight adds performance.... the headers will be lighter than the factory manifolds, but the two pipes and two turbo mufflers will end up adding a little weight total. Drive shaft loop will add weight, but it's necessary. When I go to manual steering, I'll be ditching that 30 pound-multiple groove crank pulley for a single groove aluminum smaller pulley - most critical weight pound for pound that one can loose is right off the crank.