2g valve guide heights

[hidingfrogleap]

I'm in the middle of replacing the valves, guides, springs, retainers etc and can't seem to find what the measurement should be from the top of the valve guide to the bottom of the spring seat on the head. I saw that it's 19.5-19.9 for 1gs on a similar thread but is this also the measurement for a 2g head? thanks in advance.

 

[hidingfrogleap]

The new guides are getting put in an hour or so, so anyone chiming in would be really appreciated. Thank you!