will these fit?

[SMpaintball78 58]

hey guys, i was wanting to install my jl speakers buttt i had a question i know u guys can help me out with. my stock speaker size is 6x8 in front and back. up front, i have the jl 6.5s and im doing tweeters up in the pillar up front. then in back is where my problem begins, the speakers are 6x9s and the hole is for a 6x8 so how much if any will i have to cut out to make them fit?