Match-Ported manifolds to match the EMPI GTV-2 Wedge-Port Heads. One of the benefits of cast porting is that you can replace your manifolds at any time and still have an exact match to your cylinder heads. This Off-Set intake is Port-Matched for Stage 3 Cylinder Heads for HMPX/IDF/Dellorto Carburetors. Sets are complete with all hardware & Gaskets.