I think that it would be a good idea to group the cars considered for conversion by year, make, model and engine type. That way we can find the most popular cars and contact the kit makers to see if they would make one.
We are bootstrapping an industry. Lots of people want to know if there is a kit for their car. We may able to get the kit makers to make the kits by showing them that there is a genuine interest in sufficient volume.
So, if you have a car that you would like to convert to NG or dual fuel, please indicate the make, model and year of the car in a response here and I will put together a list of the most popular cars.
2001 Ford Taurus SE 3.0 V6