It will actually look pretty good even if you dont glue it in and let it just lay there. But it will also rattle without glue.

If you dont want to take the dash out, I would just follow the directions and put the 6 dime sized dabs of glue they give you and try it out. Many people have said this work fine. But the beauty is you can always do it some otherway again if it fails. You wont be ruining anything.

Then if that doent work you can try something else, or if later on down the road you have to do some AC diaphram work, you can try the John Roncallo vacume bag trick.

John Roncallo