The hardest part for me when I did the gaskets on my L36 motor was getting to the upper itself (removing fuel rail, tb, keeping track of what connected where). It was also my first time ever tearing into a motor and having to put it all back together. Your not going down as far as I did but you still have to get all the stuff off the top. Be very careful with the fuel rail though as I about bent mine a couple of times. If you're careful you can sit it on top of a towel over the airbox area without it really being in your way (and also not having to disconnect it and lose fuel). It never became a major issue, just a minor inconvenience to have to work around.
2009.5 G8 GXP SRM M6
1989 Chevy K2500