Is there such thing as a CNG dedicated 4x4 Extended Cab F-150? It seems like everything I see for sale is a std cab 2wd. I'm trying to stay away from the bi-fuel due to the compu valve issues and I can't seem to find one with 03+ without the compuvalve. Also what should I look out for on a dedicated cng, what are some common issues that I will need to have checked over on the f-150?
Thanks
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