Help me win this argument 400 in a 72.

There is no replacement for displacement, but to do so you pay a price.. It all comes down to how much you guys drive it and what you think is worthy of your time. You can build a hefty 408 out of a 360 for the same amount of building up an monster 400 stroker, probably do more to the 360 block with heads, crank, roller cam.. etc... and not have to do to many modifications to the rest of the car.