Alliance AutoGas said it has received additional approvals from the U.S. Environmental Protection Agency to install is Prins VSI system on Ford 2012 and 2013 models. The Prins VSI converts conventional gasoline vehicles to run on propane autogas. Ten Ford models can now be converted. They are: 5.0L Ford F-150 Pickup 2WD and 4WD, 2013 and 2012 model years 6.2L Ford F250 Pickup 2WD and 4WD, 2013 and 2012 model years 6.2L Ford F250 Bed Delete 2WD and 4WD, 2013 and 2012 model ...

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