So I'm looking at hot rodding the little 2.3L 4 banger in my pinto wagon. I was looking at an Esslinger racing head and an offenhauser manifold. These two have different ports...the offenhauser has dual port oval shaped and the Esslinger is the D-port. Can I bolt these together or will it not work because they have different ports? The other option would be Esslinger's cast iron D-port head. How good is the Esslinger head? How is it vs the Offenhauser? Thanks!