Here's a source: Propane Conversion Kits

If desirable, you do have the option of going dual fuel if an electric fuel pump is installed. Turn on the propane solenoid, switch off the electric fuel pump, and then the propane will take over. The propane "hat" fits over the carb. EZ.

A large pressure vessel (tank) is needed to have any meaningful range so say adios to some bed space. The rock crawlers can get away with lil ones cuz they go slow and not very far.

Better figure out the ROI (return on investment) to determine how long (in vehicle miles traveled) it will take to recoupe the cost of conversion.