Cu/FT for a SX

[BIG_SUPERMAN72]

How many cubic feet should my box be for a 12" SX.
I made a truck box. I dont have alot of room. I may make a box to fit on my Middle seat somehow. If anyone knows hit me up.

[btnhfan]

i want to know the same thing. i plan on buying one and i emailed re, but they didnt respond.