Can’t go wrong with Kauffman, Edelvrock or the Speedmasters. The E heads are tried and true. The Speedmasters are a little less money but flow a little more than the E heads out of the box I think. But horsepower is airflow and the Kauffman high ports flow 330 out of the box. That would be my choice. They can be Cnc ported relatively cheaply by Kauffman. The E heads can too. I had a set of cnc ported by Butler that flowed 340. Very nice too but still I would go highports.
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