i love a challenge... i do have some experience. im not sure if your familiar with team jbl??? i helped build damon mletzko's car 3 gti 10's, and a 6000crown 2 sattelite batts, 160plus db. just the construction though..yes a huge wall(as a helper). If i can figure out a way to tune the box right and run ported believe me i will, Ports have always made higher numbers from what ive seen. but i only have a center console access to my trunk from the cabin. a hole aprox 12x6 so it would have to be a centered port directly in that hole. which i dont know if thats big enough..btw I hit a 143 in my old honda crx in the hatch with 2 SONY XPLODE 15'S and an old 800 watt punch amp..... home built box all welding wire and spray foamed.ill take you up on your challenge and i bet if anything i should be up to 145now, if i doubled my power i would blow my subs.... seeing as m3154d are only 400watts rms each...... and that wouldent be to smart eh??//content.invisioncic.com/y282845/emoticons/wow.gif.23d729408e9177caa2a0ed6a2ba6588e.gif