As hemi07 said, that hood uses the stock airbox location. So the ram air part of it will not work with a Vararam.... I could definitely see you having fitment issues with your Vararam on an aftermarket hood as well.
Completely different kinda of question but about aftermarket hoods and CAI. Is it beneficial to be using an aftermarket hood that brings air into the engine bay while having a CAI? Or does a CAI already do that with some sort of path.