Vehicles

NGVAmerica.org maintains a list of all the CNG vehicles for the US.

I recommend buying an OEM (Original Equipment Manufacturer) or QVM (Qualified Vehicle Modification).

OEM

• Honda Civic
• Joe Marina Honda
• Honda of Bartlesville
• Don Carlton Honda
• 2013 Chevy C2500HD, 2012 Chevy Express Van
• Danny Beck Chevrolet in Sapulpa, OK 

QVM

• Westport WiNG - Bill Knight, Bob Hurley, Joe Cooper
• Venchurs
• BAF 

EPA Conversions (aftermarket conversions)

• Carter Chevrolet in Okarche, OK - upfits Impco CNG systems on Chevy trucks, SUVs
• Clean Fuel Conversions in Austin & Shawnee - upfits a wide variety of systems on many different vehicles.
• Parkway Chevrolet in Tomball, TX - this is who converted my 2011 Tahoe with Impco equipment.