Today, dollar for dollar, is the 318 faster than the 340 ???

The most money I have in an engine, including the price of the engine, in my cars today is 1450, and it has aluminum heads. I think 3k would be "unlimited shopping"... LOL

Yeah, but what all did you sell to offset that cost to get to that 1450 with aluminum heads? And yet, you're not giving that option here in your little experiment.