using stock H/U please help T_T

[cheori]

hi. my first post here. Sorry for bad English.
I lived overseas way to long.

Nice to join the board and hope to share lot of informations

I have a stock headunit that I want to keep it since it has USB/Hands free/ steering wheel remote..etc. I know the best way would be giving up all those and buy a decent deck but I like the stock look of it. Afterall, thieves won't be able to tell if I have aftermarket stereo in the car

I used to use Audiocontrol's LC6 to do it before, but I wanted to ask all of you what is the best way to use stock headunit with aftermarket gears. I have the following to be installed.

Focal K2P
Focal 33KX
Focal 2.150
Focal 1.800

I was looking for products online, and noticed there's one from JL, few from Audiocontrol. So what's your recommandations?

attached is an image of the center facia where the deck is located.

[audioarsonal]

JL does make a new interface which compensates for al sorts of vehicle variables to make it sound as good as an aftermarket but personally i would get a good high low converter so you can use an aftermarket amp and still have functions with factory deck.buddy did it in a grand prix for some of the same reasons and it sounded great.

[lyttleviet]

RF 3SIXTY, JL Cleansweep.