Bmxracer813

i just got a RE SX 15 and im lookin to build a box for it. i want to build a vented box 3.5ft^3 tuned to 32hz. i came up with the dimensions of 34X16X14.30. i made a cardboard replica to see if it would fit in the trunk. it just barely made it. anybody with a 3rd gen what size box and what are the dimensions of your box. i want to build this later.