2010_FX2_Mondo

It's wondering and looking around. But has anyone upgraded there Sony Sound System? I didn't know if I should keep the stock box or if I could get another box under the same seat with a slightly bigger Shallow sub. Be Kool if someone had pics of the build. Lookin to upgraded the sub and amp.

Logan24

I think you'd have more luck in the aftermarket and reviews section of the forum.
I've see a few guys on here take out their factory sub and install a custom built one and use the same holes to bolt it in.
You can probably find more info using the search, there should be at least a few threads with guys that have done this.

Superman750

From what I read, if you are just looking for some more bump out of it, you can fill the box with polyfill (I am probably totally wrong on that, just do a search) and it seems to appease most people.