Intake Manifold Plenums 
Features and Details:
Pair of 6061 Billet Aluminum Plenums - No more sheet metal to bend
Larger intake mouth to accomodate flow
Stainless Steel countersunk mounting hardware for seamless install
Viton O-ring seal rather than RTV - Tested at over 100psi
Works with both dual and single HPOP's
 Billet spacers for GPR and GPCM brackets
Plenum mouth O.D. is machined to retain intake "Y" better for T4 style kits
Description:
The Gen 2 billet aluminum intake manifold plenums are 100% made in the USA from USA materials.
An engineered design that addresses several issues at once