This is the perfect manifold to match up with Worlds powerful Motown heads. Extensive research and development has yielded plenum and runner designs that are so good that 30 HP gains were seen over other manifolds tested. A ''spider'' is cast on the manifold floor to eliminate ''puddling'' and enhance the bottom-end performance, while external runner booses facilitae the installation of nitrous oxide fogger nozzles or fuel injectors. World's exclusive RightCast Manufacturing technology results in the best out of the box competition intakes on the market.