Looks like I'll keep the big six, one hell of a strange option list including AC. (found on the truck forum)
The data for this Scotsman from the build sheet (line setting ticket, production order):
Factory order # 8108 Final Assembly date 2/2/59 Line Sequence 3154 Final destination- Oakdale, Calif
Serial number E3-311 Engine number 4E-7710 Model 4E3-112-C1 with box Paint # 5955 Apache Red Key # 4639-s
Options: Axle ratio 4.27 Overdrive transmission Heavy duty radiator Front bumper- chrome Air conditioner Sliding adjust seat Foam seat cushion Extra visor