All over the US, Canada and Mexico. Virtually worldwide if depending where you are. In US as of Jan 2013 is a number of the companies offering conversions for different vehicles. Unfortunately its not one size fits all, so you got to provide the information on the vehicle to see which CNG conversion kits are available for this year, make, model, engine type. It is important to mention that EPA have introduced 2 other categories: Intermediary life cng conversion and out of life cng conversion. Now vehicles with mileage higher than 100K van be equipped with CNG kits that are significantly less expensive.

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