Original manifold set 997 3.8l GT3/RS
modified with 2x trimetal ??130mm big volume 200 cell high flow HD catalysers
7KW (10PS) more power and 4Nm additional torque
DMSP / SPORTS- CUP homologated
In exchange
Cargraphic Original Manifold set modificated for the Porsche 997 (Mk II) GT3