318 head porting for the average joe

If your hot and heavy for a 340 X head. keep this in mind. they only came on a 340 from 68-71.
Just as good in my mind, Is the 360 head ( unless your having a "max, pro porting" job done) they came on every 360 until the magnum came out.........93? So 71-93 that is a much bigger pool to choose from.

I know there are people that will argue with every point i have just made!!!!!!! but generally/ basic.........This is a true statement.