Whoa! Way incorrect!!!! 2.02 + 1.60 + room around the valve.
Amen on there “hopeful” good quality in there OOTB state. IF they flow as well as they have advertised, that is about the level of a ported W2 head. Then an adventurous person will have to start porting them. It will be interesting to see where the head porters end up. I don’t see it getting to a W-7-8-9 level at all.