This is a "build your own" custom base kit that can be adapted to fit a variety of cars, trucks and boats. Kit comes with 2-3.5" couplers. Additional Couplers can be ordered in our Silicone Couples and accessory catalog. Need help ordering? Contact us a firstname.lastname@example.org This Venom2XS system is a Hybrid Forced Air Intake that packs some serious top end performance! It packs some serious performance. Increases of up to 5 MPGs have been reported. Horse Power gains around 30+ with an appx. hour and a half install time.