Designed for EVO’s running the stock MAS. Made from 3″ 6061 aluminum tube. Comes standard with 2 vacuum fittings. Couplers and clamps *NOT* included. If you’re still running the stock turbo you will need a 2.5″ x 3″ reducing coupler for the turbo inlet, and a 3″ straight coupler for the MAS. You will also need to supply a small peice of hose to connect the BOV dump to the recirc tube.