Have an Alpine MRV-M500. Sundown Audio E12 V.2 going to run it @ 2 ohms 500 watts rms. Will some one give me dimensions to build a box for this. I want it ported the parameters say from 1.5 cubes to 2 cubes. And I want it tuned at 32 hz. Will be going in a trunk of a 2002 malibu. Stock battery and electrical. Using 3/4 MDF. Listen to rap and Decaf.