Well, you hafta have higher CR with alum due to higher heat loss, so depending on where you're at, that aspect might be a wash vs a stock Mag. The higher turbulence due to CR should still give benefit, though, but I wonder if the Mag ports compensate for that better than Eddy???

I'm not sure we could automatically say the Eddy is superior to a Maggie simply because it's 8 years newer, though. I'd bet Mopar had lots more resources to develop/refine that head vs Eddy (heads are crucial to emissions compliance), plus the heads are both for vastly different purposes. Both are better than an OEM bigblock head, without doubt.

Either way, Eddy is beyond the scope of what Pale is looking for.