Rebuild 915 heads or go aluminum?

Dartswinger70 said

Lemme ask this would you go iron for just under a grand or aluminum for $1200 or more...? all things being the same in CFM and just saving the weight?

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Dartswinger70 said

I have a set of SBM 915 Js in the shop right now with the works being done to them(no porting) for $950 out the door just for the backstory.

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Unported J heads aren’t even close in terms of flow to ootb SM heads.
So, all things are not the same.

Of course, this thread is about BB 915 heads.