the rarest of the rare i've got that truck[mercurey- 1965 4x4 "napco"i ton dually hd-300 6 /587-1 axle/plus i added a woods dump box on it !>[3 where made up by ""napco ind. as ford didn't start making m/f 350 4x4's till 79-80 yr's /and getting parts /like locking-hubs /wheel rims 16 "-19.5 >huge fender wells 11 HA HA> was one of the hardest projects iv'e done /TOOK 10 YRS. TO FIND "HUBS / FR. 250/ 350 [CHEVY- NAPCO]> THAT FIT ./ANYWAY'S mine is all org. still runs great/ the toughest/ best ever [fire wood -bush truck made ]if i were you i would go with a newer frame /running gear will fit from your 65 >over to up to 89 i believe !/ hope this helps / thanks >woodman