2010 Forte SX rear Rockford Fosgate Punch speakers

I wasn't gonna pass up a great awesome deal at a pawnshop to buy Rockford Fosgate punch speakers for $25.00. Been wanting to upgrade the OEM/Factory paper speakers for a long time.

Rockford Fosgate Punch.

2x 6 1/2 165 SI

2x P1T-s

2x P1692

Has anyone installed 6x9 speakers in place of rear 6 1/2 (6.5) speakers if yes, what process, mods was needed to complete installation & was it hassel or is it worth the hassel? Is there pics of the before & after?

Was looking at the the OEM 6.5 rear speaker area & I'd have to cut out to accommodate the 6x9. I don't want to cut/mod the rear metal side panels at all if it's not worth it & especially if I have to mod the rear plastic panels.

Thank you