[knowyourturbo]

I want to build a sleeper (stock appearing), does anyone offer a polished intake manifold (on the inside), I know some companies take the stock manifolds and port match them, polish-up the inside of the manifolds (upper & lower), and the turbo will spool up faster and offer better throttle response, and better airflow, and the best part IS, looks stock and performs great, anyone know of ANY companies offering this??? It's usually an exchange/purchase part. Any help??