I'm looking to buy some good Cleveland/ aftermarket Cleveland heads that flow well. I am aware that the 4V cleve. heads flow fairly well with a mild port job. My question, is there anything better ported/non-ported that are better than the factory 4v heads either ported/non-ported? I am hoping to keep Yates heads out as they are fairly expensive. I know Kaase has the Aussie style "3V" heads, but that is the only aftermarket style I am aware of. Hopefully there is something better! Thanks in advance for any input!