Not Ranked
Yates if your prepared to build the rest of the motor to suit- pistons-pushrods-header bolt pattern.
Chi or 3v if you have a 351c, Boss 302 & dont want get into the piston dept, and want all the original bits to fit ( although the intake manifold to match these heads is a virtual must ). I've built a couple of race motors using these and am real happy with the results.
Jac Mac
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