Ok IB in this car is pretty easy my first try was for a single 15. A simple baffle right behind the seatback. There are plenty of factory mounting points without any drilling if you want to utilize. I'll give this one to any 9th gen owners that want to try. Might fit 10th too by looks but im not sure.
I had two of my favorite woofers laying around and decided to make another baffle. This one took forever to complete as i only got a couple of hours each night to work on it. Wasn't hard just lots of work. I could prolly get a trace of the shape of anyone is interested. Anyway haven't done and tuning but seems like it's going to be just what i wanted. Anyway would like to show pics if anyone cares.
Decided on Overkill
From the back seat side, decided to simplify install and move the dsp from under the dash and the pre from under the seat so they could be grounded together with the amps.
Rest of the system.
Brolly harness to
Helix dsp.2 to
Pjl labs custom dual stage tube preamp to
Nvx jad800.4 to
Stevens mb6 2 ohm
Alpine pdx m12 to
Jbl Gti 1500 15s