If you're looking for a way to geek out your ride, you can 3d print yourself this sweet bass-thumpin speaker upgrade!

Parts:

• 20W Speakers
• MAX9744 Class D Amp
• 8 x AA battery holder
  
• 1k Potentiometer

Tools & Supplies

• 3D Printer
• Soldering Iron
• 30AWG Wire Wrap
• NinjaFlex
• Male/Female Jumpers
• Flat Phillips Screws with Nuts #6-32 x 1/2 in