Trucking, This might help with the VIN Number. 1938 I.D. Plates are located on the firewall. Series are HB for coupe pickup, and sedan delivery; HC for 1/2 ton models, HD for 3/4 Ton;
HE for 1/Ton models. '39 and '40 have the ID plate under the hood on the right side of the body: 1939 Series are JB for Coupe Pickup, and Sedan Delivery; JC for 1/2-Ton models: JD for 3/4-Ton Models; and VA for 1/Ton models. 1940 Series are KB, KH, KC, KP, KD, KF, and WA. Remember, these should be the third and fourth digits in the body ID Number. If you want to post the entire number here, maybe we can help some more.
Jay