With many many years of hands on alternative fuels experience, Grimhall Vehicle Upfitters is your source for aftermarket conversions. Our in house conversions comply with all NFPA codes and CSA guidelines, carry a warranty and operate seamlessly. We work closely and directly with manufacturers to make sure you are getting legitimate hardware for your modern sequentially fuel injected engine. Don't be fooled by the cheap kits that can be found online. You never know what you are getting, and saving a few bucks up front could end up costing thousands more later. Our direct relationships with factories allows us to offer the best pricing on a high quality vehicle conversion that will help keep our air clean and your wallet heavy. Call or Email us for a quote.

We also carry parts. Click the big  green button to visit our alternative fuels online store. We have a large selection of CNG hardware and accessories to help installers get the job done on time and on budget.