Original Little Red Wagon A-100?

Thats what the actual "kit" calls for, and comes with for the model. is the Hillborn set up.....I just want to see if there isn't something more I can do as far as detail on this model to make it closer to a time line as far as the early stages in, as it was built the first time..... As pictures of the real truck show different engine intakes and I would like to make it as it was first built....Kinda as a Icon, of itself, ya know?