i'm gonna have to go with skip on this one.Heres what ya do........keep emptying packing peanuts into the trunk......than pour resin over it all, than take it out and measure it....easy peasy
bigger than you might think.not that big
do you have a Sedan? My2005 ex coupe is 37" Deep, 41" Wide in the back, 53" wide in the front.39 wide max. 17 tall max. And I think 26 deep. Civics trunks be tiny, that's why I had to build the box from the inside out.