What Do You Suggest?

I have a double cab and I am wanting to fit a 12 in sub behind the passenger rear seat. I can take out the storage bins and cut the child restrain hook if needed. I already have a Rockford fosgate prime r250-1 amp. I could probably get another amp if I needed to but would like to keep the one I got. My budget for the sub and sub box would be around $300 to $400.

 

No need to double post a thread: http://www.tacomaworld.com/forum/audio-video/207129-will-work-fit.html

 

Well I posted the other wondering if that Rockford Fosgate shallow 12 with the box would fit and they said it wouldn't. So now I was wondering what other options are available.