What is the best head for a small block.

RAMM said
The G3 has some drawbacks to be sure. Some people think the stock rockers and lack of lower $$$ rocker systems are one of them and they are -----depending on what you're doing. The stock rockers ARE lift limited to about .630-.650"
Big deal--not many guys I know of around here running that in their LA's, reliably. Simply put-the G3 is THEE best bargain for big power in Mopar world that has EVER been. J.Rob

I came to this conclusion as well a couple years ago. You put the same amount of work for a 500hp SBM into a G3 Hemi and you'll get 700-800hp out of it. No wacky design flaws either, remember our beloved LA was a quick redesign meant to lower the weight of the Poly engine... the G3 Hemi has almost a decade of R&D, they took their time to make it really good and it shows.