[Lynn Eades]

The Willys were built first. When ford started building them, they used Willys chassis in the first lot.
To give you an idea, Willys serial 112815 has a delivery date of 16th Jan 42
Ford serial112401 was delivered in april 43.
The Cyl head with "willys" cast into it, is post war(if i remember correctly)
The Willys has a round tube cross member in front of the grill.
The Ford has the inverted Channel cross member (there are many other differences) As stated the early Fords correctly have a Willys chassis.