Just did the sas removal and it was pretty easy. Hardest part was to install front cylinder plate.
I didn't remove air filter box so I think you better have gynecologist fingers to do this.
Screw marked with red arrow were PITA to remove. Did remove all screws of oil tank and push it as forward as it goes (blue arrow).
Oil return hose were the one that was blocking the most. I wasn't able to see where and how it was attached from the middle to move it further away (yellow arrow).