I was thinking 84 was too early for a 350 dually 4x4 but that may just be for pickups and not c&c trucks. Or I could be completely wrong. I only really ever look at 86 c&c trucks anymore due to the D60 and my 80 and 85 are 2wd.
Regardless, it looks like it would be a nice work truck to have.
Scott
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Camano' 1986 F250 Supercab XLT Lariat 460/C6
'Chanute' 1980 F350 C&C 400/NP 435 - Gin Pole
But there ain't nothin' wrong with the radio