Depends what you are looking for.
Sure the 408 makes great power, so would a supercharged 331.
All things equal, the 408 has the potential to make more power than the 331. But, how much hp do you want. I'm going with a ProCharger D-1SC on my 331 - looking for right around 500 rwhp with a safe tune that I can easily drive on the street and take to strip for fun.
BTW - get a Fluidampr on that beast!
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