Not sure where you can buy this, but Felipe posted a video of the pedal he uses. I wish I understood Portugese. It's got some cool dual EQ, clean & dirty blending & things.
Other option is the Sansamp Bass Driver, which sounds a lot like that & would probably do the job & there's a free plugin based on it also you could use right on your current track: http://www.tseaudio.com/software/tseBOD