The motorcycle stuff isn't built for the weight of the T.

There are two axles from the '37 Ford, an I beam and a tube (V8 60 cars). Either one would mount with a transverse spring as will the aftermarket dropped axles. The biggest difference would be that the stock axle will make the front end sit higher unless you compensate with a raised, suicide front spring mount or a Z'd frame. Also the dropped axle will require modifying the steering arms.

The Econoline axle is made for two semi elliptic springs rather than the transverse spring. You could probably make a Rube Goldberg setup to hang it, but why?