my parents got me a set of Kenwood 5 way 6X9s for christmas and i was wondering, has anybody put 6X9s in their corolla, specifically in the rear? they're nice speakers and it'd be a shame if i had to get rid of them, partially because their nice speakers and because if i were to return them i'd probably be assessed a 15% restocking fee

. they're too large to reuse the stock brackets and too deep to just drop into the old hole. my friend and i tried to cut a hole out but a Dremel with a diamond cutting wheel did very little besides make a lot of noise.
if anybody has any tips i'd appreciate it. when it comes to car audio im admittedly terrible.