Its funny, my dad and I have had 10+ slicks and never have come across a uni or even a 64 for our fleet, mainly stick to the more "modern" 65 and 66's. Dad did have a 66 F-250 4x4 back in the 70's, still have that cab! Ill keep looking for that unis as well, maybe agfter I finish a couple of the ones I have!
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06 F-250 CC 4x4 King Ranch 6.0, 65 F-100 Shortbed Fleetside, 66 F-250 Ranger, 03 Taurus, A pair of ATC 70 projects...