Installing CNG is not your typical D.I.Y job

thats probably why

Look at www.vialle.nl for more info

Its doesn't involve a F350  but shows you what's involved with a modern CNG
system

You should consider propane instead. It is a cleaner burning motor fuel
and easer to store and at much lower pressures and since it is kept in a
liquid state, you will get a lot more range to. CNG requires several
thousand PSI and has limited range, propane needs only a few hundred PSI
and conversion is easy.

From: http://www.hybridfuelsystems.com/

"In general, the price to convert a vehicle will include the conversion
system with prices ranging from $4,000 to $6,000, the cost of the fuel
storage tanks which can range from $200 up to $1,500 and the cost of
installation which typically costs $700 to $1,000. As a rule of thumb,
the higher the vehicle weight, the more expensive the system. The
typical passenger car or light-weight vehicle will cost in the $6,000 to
8,000 range which heavy duty over the road trucks can cost in the $8,000
to $10,000 range including installation."

If this is a farm truck, I'd ask the County Ag person for some advice.
He/she can steer you in the right direction.  I'd think propane would be
a better choice, but how much money you will save these days, is
questionable.  All fuel suppliers have us by the short-hairs......

I have seen CNG 'stations' mounted in folks garages.  This little unit
hangs on the wall, is the size of a small shop-vac, and can refill a
tank overnight.  I think what I saw was in Calif, but I don't remember
the cost of the unit.  The user was pleased with it.....

NG is supposed to skyrocket this winter.  It was 'up' there last winter,
and the talk is a 50% higher rate this time.......it's a good thing
we're all 'made of money', ain't it?

Dave S(Texas)

One thing I remember reading is that on a propane conversion you loose some
HP.  Not sure if that is true with CNG.  But something to check into.

Scott