Head Gasket and Rocker Arm questions

[Nox07]

I’m in the middle of changing out the head gaskets on an 07 Nox. I know you have to remove the push rods (and yes I know they are 2 different sizes..longer for exhaust and shorter for intake). I have the Lisle tool that removes the push rods easier.

My question is, do I have to loosen or remove the rocker arms to get to the head gaskets?
Or, can I just remove the push rods without ever touching the rocker arms?

 

[cavell]

Using the tool make changing intake manifold gaskets easier since you don’t have to remove rocker arms.
It saves no time if you plan on removing heads.
Remove rockers arms. Remove pushrods. Remove heads.
You are going to clean head sealing surface and handling heads with attached rocker arms is a pain.
You “should” resurface heads. Do you plan on doing that?
You torque rocker arms to 22ft/lbs. no valve lash to adjust.