Yes thats possible. Any pics? Do you know if its a 76 or 77? Possibly 77.5?
Im not sure on all the specs for the 73-77 8lug D44s. I know "most" were closed knuckle, low pinion and drum brakes. The later 77 stuff started getting open knuckle and disk brakes. Big hub 44s were certainly very common though
i don't know a whole lot about highboys, but from the pic it looks to be sitting a little low to be one, so i would guess 77.5 or newer (so called "lowboy")without seeing it up close and/or personal, but buy hearing you say it had a steering ram i think 77 and older actual highboy with manual steering and an assist ram.
if the truck is close go take a socket set and tell us what size the diff cover bolts are and look at the front driveshaft. high pinion and low pinion placement are very easy to tell the difference on if you aren"t retarded. does the d-shaft enter above or below the center????