I know I posted this in my other post, but I figured as its appicable to this post as well
Here are the pics I promised.
Heres a shot of both heads from the top valve cover view
Heres the "1.6L" stamp on the side of the elantra head.
The 1.6L intake ports and then the 2.0L intake ports. Notice how they are identical.
Another closer pic of 1.6L ports
A pic of both next to each other.
Heres the exhuast ports on both. The same size as well.
Heres a look at both cumbustion chambers. Here you can see how the 1.6L chambers are a bit smaller.
you can notice the extra material between the cylinders on the 1.6L Other then that the valves are the same size!
Heres a pic from farther away of the 1.6L cumbustion chambers.
Here is a pic of both combustion chambers together to compare. the turbo 4g63 head is on the left.