cubic feet ????

[headtrnr]

how do i calculate cubic feet if i have to go around the wheel well in the trunk my box isn't going to be square i think i need to fibreglass the sides and then use mdf for the rest but i do i account the wheel wells into my calculations

[.::DuD3::.]

its tricky, best bet might be to use packing peanuts. thats what i'm going to use to find my box volume. some people say use sand or water, but that can get a lil messy.