Hey guys

I had mine GS450H 2008 for 1 month now and already upgraded to Tesla screen, I'm waiting on a DSP to be delivered and new amp on standby in my garage
I want to upgrade the door speakers and the rear deck sup

My question is, has anyone measured the clearance for the sup? Like how much depth for sup is available. And it's 10" right?
I have searched everywhere and no luck
I know that the battery and other stuff is right beneath it and you have to rip the back seats out to remove the stock sup

Reg from Iceland