Well to get it to fit properly, I have to make the v7 taller so it seals against the top of the hood scoop- you don't want iar to go over the splitter- you want all of it to go directly to the intercooler.
I noticed the v7 had a "lip" bent over the top (the oe WRX one doesn't)- I could cut this and fold it back and then cut back about a inch on each side and pull up the splitter to make it a little taller. I also added a little thicker strip of foam on the top side of the splitter to help seal it further. I got going fast and forgot to take pics of the finished product, but have a shot where I outlined where to cut. Pretty easy and I'm happy w/ the fit. My wife is happy w/ the old scoop back