JL

I have taken care of the replaced headunit and front speakers, and added an amp and rear speakers, all without putting anything in the trunk. Now, I would like to look into adding a sub in the passenger footwell. There was this thread that showed a shop down in L. A. area who did a pretty creative install of a sub under the passenger footwell. Did anyone in Bay Area get something like this done locally? Or, any kind of custom sub box design and install under the dash or in the footwell area? Any recommendations?