Hi, folks. I have a clean 1970 D400 from Oklahoma. Currently has a /6 NP435. I have a nice 440...all done, from a different project.

I've already ditched the 6.6:1 rear axle in favor of a Dana 70HD. Retained the nice 20" wheels.

Since I need to use this truck for hauling and moving stuff around (highway driving long distances), I thought the 440 would be a better way to go.

Finding all the pieces to retain an NP435 (hydraulic clutch) behind the 440 is pretty close to building a decent 727.

Any thoughts, opinions on this move?