I bought Fel-Pro Gasket Head Set HS 26170 PT-1 for my Outback 2004 4 cyl 2.5L EJ259. The actual exhaust manifold gasket has one port or hole but a new gasket from the set has two ports or holes and won't fit. I checked different years or models and found a gasket good only for 6 cyl 3.0L EZ30D. What's going on with the wrong part number or model or engine? I think I have right to replace the wrong one at no charge but there are many manufacturers specified a wrong gasket type for my engine. Thank you for your help.