68 dart with running 383 auto - advice to build another motor

PRH said

Sounds like you already have the parts “recipe”.

383 or 400, non-stroker, off the shelf pistons, iron heads, 509 cam.

The rest of the stuff is mostly personal preference.
What intake, carb, brands of gaskets, bearings, valvetrain, etc.

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Thanks for the reply,
What do people generally use for off the shelf pistons? I see KB forged or hypereutectic pistons ?
Not sure which iron heads I should pursue is why I was looking for some feedback as I have 3 different sets locally for sale or perhaps for my needs it doesn't matter so much.