I have for sale this experimental Nissan Micra K11 Exhaust Manifold. Designed with long headers to improve torque.

The 2 end pipes come out underneath the car and are onto of each other as opposed to side by side like many normal competition manifolds. Anyone buying this item will have to play around and modify as necessary to fit your system.

There are various sliding joints which will need welding once you are happy with the fit.