Would you be able to design me a pure spl box not a daily driver. I have a 18" crossfire xs v.2 D1 running off 2200watts rms. my current box has about 7cubes with around 200sqin of port tuned to 32hz with a 7" port my dimensions are 40"L by 22"W by 23"H I hit a 143 on idbl and a 142.3 on music with door open. I'd like to be around 145-147 range could you design me a box and how much would you charge? Let me know thanksss