oldskoolfab leads the way in innovative Carbon Fiber Exhaust Stacks for Diesel Trucks. All Carbon Fiber parts made by oldskoolfab are hand made using highly specialized resins. All parts are100% Carbon Fiber and made per order right here in the USA. We infuse all parts which yield a 70-30 Carbon Fiber to Resin ratio for a lighter denser part. We hand fabricate all our molds in house and specialize in one off custom pieces.