I'm considering something like that; but a tank large enough to be useful and which would take up the space of the removed gasoline tank would be about triple the original cost to me of the whole vehicle - just for the tank.
Then there's the fact no local dealer has any interest in CNG, or the characteristics of the vehicle, or presumably servicing it. And 3600 psi is nothing to play with. Training helps.
On the other hand, only 60k miles on it. Though also s lot of rust underneath. '01, from MA.
There's also the residual odor of the rodent nest ... I hope it's just residual odor of a nest, instead of a carcass hidden somewhere behind the plastic. I haven't yet stripped the whole interior, but I'll get to it soon - summer is coming!
If by 'short haul' you mean something that would be used in one area local to a CNG pump, then, yes: the property the vehicle was (presumably exclusively) used at had a pump less than 13 miles away. When they ran it on property, it would run pretty clean. I don't know if they had an on-property CNG pump; that could make running something like this incredibly cheap.
I don't know what the "dual-fuel delete" code resulted in changing on the vehicle. Again, no local dealer's service advisors want anything to do with this - they're not interested in doing any research to learn about an outdated vehicle. And yet, the 31 gal. gasoline tank was still there; go figure.
I still haven't pulled the dog box. I'm interested in seeing if there actually are two injection rails. Eventually I'll look to see what's missing with regard to running it on gasoline, just to know what that 'delete' meant.
But that's more because all the disinterested service advisors have made me tired. I've been told I can be a little too particular.
But for now, it's time to replace the 'seeping' brake line before it starts squirting, or even completely ruptures. That's the one section that looks original.
Fun times ahead!