Low CR turbo engines are even friendlier, lots more clearance in the chamber. The only time I worry about the chamber design is when some kid wants a 13.5:1 pumpgas motor - the GSR head will support it even though it's not a great idea without a low cam that has overlap to bleed off excess pressure/suction, whereas the B16 head just pings semi-uncontrollably below 3000.
The GSR head has a different IM flange, and the intake ports are more of an easy angled entry so you can see the backs of the intake valves. Valve spacing/angle is identical, and the valves themselves are identical. Stock for stock, there are multiple flowbench charts comparing B16 to GSR on the internet and they are the same line when overlapped. Pretty sure "Alaniz stock head comparison" fed to Google Images would turn what you want to see up.