Cast Match-Ported manifolds to match the EMPI GTV-2 Wedge-Port Heads. One of the benefits of cast Match-porting is that you can replace your manifolds at any time and still have an exact match to your cylinder heads. This Short intake is Port-Matched for Stage 3 Cylinder Heads for 48/51 EPC/IDA Carburetors. Sets are complete with all hardware & Gaskets.