CNG to Gasoline

is it possible to convert a van that is CNG to to Gasoline? If it is, then how hard is it. I already bought that gasoline tank.

Thanks for your help!

From what I know about CNG vehicles (we need to know the exact vehicle), the engine has a different compression ratio, fuel system, and ECM than a gas vehicle.

Perhaps with a vehicle type (year, make, model) someone else can chime in?

Depends on how heavily the vehicle was modified.
Most CNG vehicles here are dual fuel, as CNG is hard to cold start on.

If you can tell us a few more details, like what sort of Van it is, what engine is in etc, we might be able to help more.

The Van is a Dodge '94 3500.

Sorry about that and thanks for the help.