quick Frank build question

So from all the DIY's I've seen they never mention this. To change from a k24 to a frank all I need to do is swap the head? Don't I need to worry about headgaskets compression and things like that or is it practically plug and play and I'm overthinking it? Also what allows you to rev an engine high? I've heard it comes from upgrading your valvetrain and Ive heard it comes from increasing cr but I've never gotten a straight answer. Ever since I put in my k24 miss being able to rev to 8600 like with my k20. Last question: how soon would I need a tune after that? or would it run similarly enough that I wouldnt need to worry about that unless im looking for power? Just a few questions hope I dont sound like too much of a noob

quick Frank build question