A CESSNA T-210 ON APCH TO BIL RPTED THE ENG SPUTTERING DUE TO LOW FUEL AND ON TURNOFF TO THE TXWY THE ENG QUIT; OUT OF FUEL. PLT ELECTED NOT TO LAND AT AN ALTERNATE DUE TO LACK OF CUSTOMS AND ROTATING BEACON OTS.

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I WAS ON A VFR FLT PLAN FROM A PVT AIRSTRIP IN MORRIS; MANITOBA; TO BILLINGS; MT; AT WHICH POINT I WAS GOING TO GO THROUGH CUSTOMS. ENRTE A LINE OF TSTMS DEVELOPED MORE EXTENSIVELY THAN PREDICTED CAUSING ME TO DEVIATE TO THE S APPROX 150 MI WHILE FACING STRONGER HEADWINDS THAN ANTICIPATED. REALIZING THAT THIS WAS PUTTING ME CLOSE TO THE END OF MY FUEL RESERVES I TRIED TO FIND ANOTHER PLACE TO LAND THAT PROVIDED CUSTOMS. AT THIS POINT I HAD DEVIATED FAR ENOUGH S THAT I WAS IN SOUTH DAKOTA AND THERE WERE NO ARPTS THAT HAD CUSTOMS IN SOUTH DAKOTA; SO I ELECTED TO CONTINUE FOR BILLINGS WITH THE INTENTION THAT IF IT BECAME NECESSARY I WOULD LAND AT AN ARPT THAT DID NOT HAVE CUSTOMS FOR FUEL. I HAD PLANNED ON LNDG AT HAMEL; MT; IF THINGS GOT CLOSE. UPON REACHING HAMEL I DECIDED THIS WAS AS FAR AS I COULD SAFELY GO BUT THE ROTATING BEACON WAS OTS AND THE RWY LIGHTS COULD NOT BE SEEN. SO INSTEAD OF WASTING FUEL CIRCLING I WENT ON TO BILLINGS; MT. ON FINAL APCH THE ENG BEGAN SPUTTERING AND I NOTIFIED THE CTLR OF THIS. HE ASKED IF I COULD MAKE THE RWY AND I TOLD HIM THAT I COULD. A NORMAL LNDG WAS MADE AND UPON TAXIING OFF OF THE RWY THE ENG RAN OUT OF GAS ON THE TXWY.