The Pro-tech shorty manifold for the FWD SR20DE and SR20DET motors are constructed out of sch. 40 forged steel using the GTAW ( Gas Tungsten Arc Welding ) process. They are designed for the Garrett, Precision, Turbonetics, and HKS series compressors. Each exhaust manifold flange is ½ inch thick, and is segmented for thermal expansion. Each manifold is port matched deburred, polished, and turbo hot ceramic coated ( Available in Chrome, Black, and Cast Iron Grey.) ***Call for Pricing***. These manifolds permit the use of A/C and can be used with our custom 2.5-3" and full 3" downpipes. All Pro-tech product's are intended for off-road use only, and prices are subject to change with out notice at anytime.