Hey John,I have filled the Vortex gas ram with my Benjamin pump set-up. So you need the following:1) Pump & hose (comes with pump).2) Air Venturi Male Quick-Disconnect, 1/8" BSPP Female Threads, Steel, Rated to 5000 PSI, Incl. Delrin Seal3) Hatsan Male fill probe (comes with a PCP gun) - I will give/send you one of mine if you get 1) & 2).Or send the gas ram to me & I will fill.........just pay for shipping.._________________________________________________________I don't know enough about the tanks to say anything on that option.Thanks thats real kind! I have a air tank from the fire dept that is full but no hoses! So I was trying to get what it takes to make it happen! So pm me your address and phone number !