Overview:FLOWTECH Block Hugger headers are ideal for limited space applications where fit and finish is really important. Block Huggers make performance and style easy for engine swaps, and with our new Hugger Toobs you ban hook up to an existing system with ease.Features: Computer-controlled mandrel-bent tubing for smooth exhaust flow Sturdy 16 gauge tubing Tight-tuck design for narrow frame rails Easy installation - can be used with stock motor mounts Precision die-cut exhaust port flanges Engineered and tested for a leak-proof seal All necessary hardware included for a complete installation Application:UniversalSpecs: Brand Flowtech Collector Diameter 2.50 inch Emission Code 4 Engine Chevrolet Small Block Header Finish Black Paint Header Style Block Hugger Primary Tube Dia. 1-5/8 inch Product Type Headers Tube Material Mild Steel Warning California Proposition 65