UL Power ships a piece of garbage air/oil separator with their engines that don't work well. I've upgraded to the Anti-Splat Air/oil separator as it's reviews are stellar. Knowing how tight things will be after the engine is on, I wanted to map out the location of the new separator here early. I estimated a spot that would allow decent clearances with everything else that is being installed on this bird and will now just have to be creative in running all the hoses. Looking forward to it.