I think the half of the dash and the entire center console on a G37 was about the trickiest thing. Center console lid has a little gear-driven mechanism and you need to flip the entire console upside down to fix, but I needed to stop everything and go to the dealership for a little plastic cog.

But we're in the middle of moving into a new place and our dishwasher was leaking so I pulled the entire 'tub' yesterday and inside front panel off to see if fitment was an issue, mostly wasting time while a couch was scheduled to be delivered, so I stopped the dishwasher project to assemble the couch (power reclining thing), then had to put the entire thing back together afterword (one of those Maytag 'chopper' models with a built in food disposal thing). But to pull the tub I had to remove the heater blower and chop chop thing and the control board and the water jets and all that... And then I realized a new dishwasher is like 500 bucks lol