Sway bar question?

[N2TRUX]

Ok, experts help me out here. I may have a chance to get a front sway bar for my 77. The catch is it's coming off of a 3/4 ton 4wd. I know the 3/4 ton part is good because it has the larger bar. My question is are the 2wd and 4wd bars the same?

I know the links that connect to the axle are different, and I assume the stands on the frame are taller too. I'm not worried about any of that because I can buy all that new.

I need to be sure that the bar itself is the same. Does anyone know "for sure"?