Best to remove them.
You may, MAY, be able to get away with pulling the upper and lower intake, disconnecting at the injectors, loosening at the pump and swinging them up out of the way.
But by that point, you've essentially removed them anyways.
Best just to take them off and not risk bending or getting contamination in them.
If not, you'll be bending them to get the valve covers to clear the rockers.
Bend them at your own risk, they operate at pretty high pressures and you risk cracking or weakening them if you bend them....
Cheers