I'm sure you've figured the reason for this thread. I'm trying to calculate exactly what I am to expect by going to the mag heads. I'll gain slightly bigger valves, better flowing ports/bowls, a bump in compression, better valve springs, and.... and 1.6 rockers. I can guess the rest of the list, but not the 1.6. Thus the reason for this thread. Then I'll use my best guess and see if they make me happy or disappoint me.
