Well to me your not being very clear with your points, It seem your post #311 was saying a well tuned combo can do a lot with little ? And I guess people are overdoing it with eg. Cam heads etc.. ?
Which I'm just pointing most can't highly optimize their combo, they have to make do what's available with little to no mods.
And also I think your whole point overall is 318 heads are capable to do what DV is trying to do which I don't think anyone is saying they aren't. It also seem your saying 318 heads are more than capable for most builds like say 450 hp and less ? And you might even been saying there better than 360 heads ?