Such a neat truck... here are some of the pics in case anyone finds this thread after the auction is over 😉. The tailgate lettering and fender flare openings look to me like it has a stretched bricknose DRW bed.
SHORT BED 4-DOOR DIESEL: 1986 F350 4x4 under construction-- 7.3 IDIT ZF5+GVOD
STRAIGHT SIX 4X4: 1981 F150 2wd to 4x4-- 300 I6 close ratio diesel T19, hydroboost brakes, Saginaw steering
BIG F: 1995 F-Superduty under construction— converting to 6.9L IDI diesel ZF5+DNE2
Re: 1965 F600 COE [modified bed] - very cool truck!
Drivetrain reminds me of a C series that my buddy had. Yup, 300 six. Truck had a van body and could manage 55 mph at best. Supposedly, original use was city deliveries. He used it to haul band gear all around the Canadian prairies and as far east as Thunder Bay, Ontario. Never let him down. Still has it to this day, but it is now storage.
Seeing that pickup bed is giving me crazy ideas again. I have a 66 N500 cab sitting around. Hmmm.