time fly's but I going to say around 5 years ago, maybe 6. It did have the wing in it and I did remove some of it but once again my major porting work it making more area at the short-side. I check air speeds and address an area to control it then move to another area. As soon as I pick up more CFM there I may have to move back to the short-side. You can see and hear turbulance if you know what you are looking for. I continue this till I see the numbers I want at the lift I need it at. .750 lift numbers although are important mid lift numbers are the main objective especially if only using a .625 gross lift cam.