1958 Dodge Truck by Tru-Scale.
This was originally made from a scratchbuilt body by Mike M. of Tru-Scale. (He liked to call it his "Lassie" truck, modeled after the one from the original TV series"). I knew Mike, and he was a Mopar guy all the way.
At one time it was available as a full kit, with a bed, from Scale Equipment Unlimited. This resin model / body would require a Heavy Truck model kit or a Light Truck model kit for donor parts to finish.
Kit was at one time available from: Scale Equipment Unlimited.
If available, this product can probably be purchased at - ebay.com
The photos here are courtesy of SoCalCarCulture. www.socalcarculture.com.