in the trunk how many cube are in there so i can figure something out, i want to kno if i could get that 18in solobaric x into that trunk.

 

The trunk space in the 4th gener's is about 14.5 cu.ft. May I ask, what are you trying to do? Are you trying to use the trunk as an enclosure for your sub? Being that your sub is solobaric, cubic ft. space should'nt be all that big, eventhough it's a 18".