After looking up the vin i posted that maynot be the original door, but then again the decorder i was useing was kinna hard to understand with limited info.

On the up side i found what looks to be a match to the booster i have. The picture and messurments are the same and the id tag thats on the mounting bolt matches.
Says its a "hydro vac booster" .. I may have misunderstood what i read about hydro vac brake sysems but dont they run off the power steering unit somehow? My truck has no pwr steering the vacume comes of the intake manifold beside the carb that runs down the fire wall down to the booster under drivers side.