I have for sale an 8 cylinder CNG kit compatible with all trucks. This kit uses Auto tune and utilizes sequential injection unlike many of the poorer running fogger kits out there. Give me a call 801-637-4570 if you have any questions or email me at CNGtechnologies@gmail.com if you have any questions about the kit or installation. I have tanks available as well, here in Utah we pay $1.49 for a gallon of fuel versus $3.50+ in gasoline.