sorry for the basic question but I'm not too familiar with working on Z's

It's a fathers day present for my dad, 1990-96 na 300z.

I see it has the intake under the piece between the head lights. Can I just take off the paper filter attachment and slap on a k&n with out much trouble. Can anyone explain the process for me?

Thought I'd ask here before I got my hands dirty. Thanks in advance for any helpfull replies!