like i said, 1 cubic foot is the general rating. and polyfill will trick the sub into thinking it's in a larger box. i'm a big rockford fan. going with all power series components and 1/0 wiring with a 5 farad digital capacitor and the battery mounted in the trunk with only about 2 foot of wire in between the battery and the amp. 2 12" rockford t1's in a vented box running off a power 1000 amp, it'll be LOUD.

95 Eclipse RS - Sold and In Montana Now
Project 95 GSX - In Full swing.