subwoofer idea, will it work?

[maxstealth04]

I have a 2005 Ford Explorer and was thinking about building a "box" out of one of the storage areas in the cargo spot in the back. I took the measurements and had an idea for 2 12" Rockford Fosgate R2SD2-12. the Measurments are 45" wide, 21" long and the depth varies from 6" to around 3 1/2" to 9". the sub will fit, but I am not a professional so I do not know if the area is large enough? I can post pictures of the area if it will help?!

 

[GloBug]

LxWxH will give you the volume.

Irregular shapes can be broken down into smaller boxes, then just add them up.

Once you have a rough volume, you can see if it suits your particular sub.

 

[m R g S r]

Fiberglass might be your best friend here for obtaining the most volume.
Look up how to lay down tape as a release then lay the mat over it to get the desired shape. It's not a quick (or clean) process but it will be a fun little project!