367 vs 410 Engines Masters

I'm in the middle of doing something similar to the premise of this thread. The current 340 with decent cylinder heads and cam in my '68 Dart kicks *** and runs very well. However, I'll be replacing it with a milder 408 because I don't need or want top-end hp for this car - though the 408 will definitely out-perform the 340, but in a milder package. The car is just a cruiser and I love the bottom end grunt that a stroked SB provides. The 340 will go into a future hotrod build.