Quick glance looks like it is just big enough to fit on the outside of the 1/2" or so lip your hood has around the light hole. But..it would be jammed up pretty close to the back edge of the lid, there might be a problem opening it. Not to mention that you'll loose a lot of light due to blockage, even if it does sit on the top properly.
That's a good light though. I'd ditch the top and use the legs that comes with the fixture.
That's a good light though. I'd ditch the top and use the legs that comes with the fixture.