Hey guys i'm looking to get a custom box for two JL 12W3v3 4 Ohm subs bridged to a final 2 Ohm load. What would be a good size for volume ? Maybe someone has a software to help me out and doesn't mind spitting out some numbers for me I'm looking for a box that will fill my trunk so maybe about 36 inches long and 16 inches tall. I talked to some experts and i've been told to go 20 % larger than the recommended sealed size for JL ....
One more thing: i need to make this work for the W3's don't recommend W6 or W7's i know they are nice and all but this is the setup i currently own and want to have the best size box built for them

Thanks in advance
Leo