FtotheC

So, I've been running S4 TII intake manifolds and wiring on an S5 TII block on my track car.





Just need to know which lower intake manifold gasket to use (manifold to block gasket)?





Mazdatrix part number would be most appreciated.





It's gonna have to be between


A.)


Part#13-111D-N318


or



B.)


Part#13-111A-N370




thanks,




- Earl

BlueTII

As long as you are not trying to runs any type of emmisions you can use either, the S5 is about half the price of the S4. The cut out on the S4 is for the EGR.