Now I see why you are asking what you are. From a business owner's perspective is where I'm coming from and that isn't going to align with all. When a customer asks me these types of questions--I have a self induced MORAL duty to try and save them from them selves. So when someone asks to build a 305 Chev stroker--I lay it all out and Guess what? A month or so later I am building a 383 for them. Same thing with the Mopar crowd--Guy comes in and says " I got a 4 door 73 Valiant and I want to make big power from the 318 and I have $3500.00." I tell them to put the 318 in the corner--go find a 360 and come see me. Another month or two and they show up with a 360 core and ---everyone is all smiles.
I have never had a customer come and tell me "We never should have built a (340/360)--I'd prefer a 318. In fact I have heard quite the opposite. J.Rob