SCHEDULE 40 TURBO CONVERSION MANIFOLD FOR TOYOTA SUPRA MK4(JZA80) 3.0L 2JZ-GE NATURALLY ASPIRATED A performance tuned turbo manifold ensures quicker and smoother flow of exhaust air to increase engine output and efficiency. Vacating exhaust air faster allows more intake air into engine cylinders for better combustion. Moreover, having separate ports and tube paths for each cylinder eliminates interference between exhaust pulses and thus reduces backpressure. Designed for turbo conversion (NA-T) on Toyota/Lexus 3.0L naturally aspirated 2JZ-GE motors, this product features an equal length runner design that is common with contemporary high performance turbo manifolds and separate exhaust gas outlets for twin scroll turbos. The piping is constructed from austenitic T304 stainless steel Schedule 40 tubes with patented craftsmanship for extraordinary strength. It is precisely aligned to maintain smooth paths for non-restricted flow. TIG welded at all joints, it also combines a cracking and corrosion resistant surface and an obstacle free internal wall. Premium materials and top-notch craftsmanship make this manifold an ideal upgrade from its ordinary stainless steel piping counterpart for only those top class racing engines. IMPORTANT: This product is for 3.0L 2JZ-GE naturally aspirated motor only.