I didn't try, but I think it will easily. Once the oem ring is removed the hole in the door is huge, I did consider 9x6 or 7's but I had already bought the 6.5's and I have a sub bass so didn't go that route.
You'll obviously have to offer them in with the window down to make sure there are no fouling issues on the mechanism but my guess is yes..... a much larger speaker is easily achievable for space. You'll obviously have to fashion a larger ring/spacer but I'm sure it's do able.