The manifold is large port and was machined by SEM to take a R32 throttle body. It had a couple of tiny casting holes when I received it and was leaking a small amount of air at these points (see the picture below). Some metal putty was used to seal these up in the meantime. This can be ground out and a weld placed along the underside to seal these up permanently. Apart from that it is good to go and was only on the car for a couple of months. Please contact me if you are interested in it.