[Model51]

Perhaps the attached 1935/6 Marmon Herrington sales brochure will help answer questions such as the MH model numbers.

The two pictures on the top and bottom left of the second page provide details on the location and arrangement of the components. I noticed that the battery is relocated from the left to the right side but still under the floorboard.

There are four 1935 Model 51 trucks shown in the brochure. Most of the images appear to be military trucks. Also, the prices quoted are a lot of money in the day since the base truck from Ford is well under $1000, so a MH conversion doubles or triples the cost of the truck. I also read that a two-speed auxiliary transmission is included with a low range. These trucks must have been rather slow on the road but could probably go anywhere.