OK I'm confused on MOPAR Tunnel Ram P4532175

Les Gibson said
Yes that is NOT a W2 intake. It would have have oval ports and W2 stamped somewhere on the intake. If not for regular small block heads the only other possibility would be it's a W5 intake.

BINGO!

Pictures say it all, W2 & standard head MP-M1-TR’s below!
Same numbers - P4532175. The W2 seems to be cast in by a block that allows the aluminum to be raised to say W2.