* Source headers or manifolds: Factory manifolds aren't designed for dual exhaust. You'll need headers designed for true duals, or have custom manifolds fabricated.
* Have a custom exhaust system built: A shop specializing in exhaust systems will need to fabricate the entire system from the headers/manifolds back. This involves bending pipes, welding, and potentially fabricating hangers.
* Consider catalytic converters: Depending on your location and emissions regulations, you may need to incorporate catalytic converters into your new system.
While aftermarket kits might advertise "dual exhaust," they often involve splitting the exhaust further down the line, *not* true duals from the manifolds. True duals mean each cylinder bank has its own separate exhaust path from the headers all the way to the tailpipes.
