470 going to the dyno - HP/TQ estimates

PRH said

Are the heads and intake still std port size, or opened up closer to MW size?

My suspicion is…….the HP will peak around the point where the lifters start to get unhappy.

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That is a great question. They are suppose to be the 906 port style, but Indy engraved the heads as shown below. I thought the MAX IN meant max wedge port, but the receipts says "Super Mod Porting - Port Match - 906 Port" on it.