340 .040 over pistons for Zero Deck...Where to find?

Thanks guys! Before your enlightenment, I was going off the standard train of thought of the all high compression pre '72 pistons always rise above the deck and the 1.74's from '72 up (low comp) are the ones that sit a tad below deck. My ignorant/simple line of thinking was I need to find the 1.74's to get close to that zero deck, especially considering the deck needs to be shaved. Now that you guys took the time to explain the geometry/dynamics of it all, 1.74's are not the ticket. So I appreciate you clearing that up for me.

The engine is in a bit of limbo with the machine work right now. Still waiting on the bore to get done as well as a line hone below. I know the deck will be coming down, but still unsure how much (not a whole lot). This motor will be in the 400HP range, so i'm guessing it's safe to say I'll need to run a decent forged piston? One more question for you guys if you have time...Would it be safe to say I could probably go with the 1.84's with the possibility of just shaving the pistons a tad? Those pistons I see all over the place.