I know, but the ports and chambers are almost identical across the board. It's also a fact Chrysler went to the open chamber for emissions reasons.....just like most everybody else. I'm not sayin they're bad heads. Quite the contrary. They're probably about the best small block open chamber heads there are.
again, i was going by general terminology. Most consider the 2.02 "X" head a performance head (and yes, it's open chambered) and the one with the emission ports in the exhaust "emission heads". I believe this is how dartfreak was referencing.
