Ok I know this has been coverd in a few other threads (that went off topic) but in reality to this day has any one out there figured out a way to get a sub under the seat of the 05 xterra other then the one that came with the RF system?

Anyone wanna sell their under seat sub (cheep) from their RF System and save me the hassle of masking one?

Can those be bought any where (stock underseat subs found on SE)?