Hey your trucks sound cool. I have a '41 art deco 3/4 ton and it is six lug. 1946 might have been a changeover year for axles though? In one of my previous topics
found here Ralph posted a link to a parts manual that could be helpful to you.
The 3/4 ton frame is different from the 1/2 ton in that it the rails are straight and the driveline is two part. There is a Torque tube from the tranny to a carrier and then open to the driveaxle. The leafsprings are on stubs outside of the frame. The 3/4 ton and up were like that from what I know.
What kind of modifications do you want to make? A tandem street rod could be slick. If you could get some decent ratios you could modify the frame and keep the straight axle and make one a mean truck.
