Not Ranked
Ford sure had trouble keeping those BOSS 302's together back in the day. To get the horse power with those big heads they had to rev really high, which was killing the engines. I guess technology has advanced enough these days to twist and engine to 8,000 on the track AND live for a decent amount of time? Or, has it...
AFR heads are hard to beat for "all around" performance. Their design is such that they typically flow more at lower and mid range rpm than most other heads. Making them excellent for the street and good torque. They don't suffer at high rpm either, BUT, when it comes to MAX flow at high rpm, there are better heads to be had.
For my use requirements, mostly street, some track, AFR would be an excellent choice.
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