Solo,
Are you trying to identify the year of the possible project truck shown on your website? If I am looking at the right pictures, it is a somewhere between 1947.5 and 1950 (the driver's side cowl-side vent - shown in pictures 2 & 5 - was on Advance Design trucks through 1950). The bed has the slanted top rails - shown in picture 1 - and thus is not a 1954 bed. Picture 6 shows tubular front shocks - first used in 1950. From where I'm sitting, the truck looks like a fairly nice, 1950 deluxe 5-window cab (well worth the selling price).
Do I have
deja vu? Wasn't the year of that possible project truck the subject of a wide and sometimes serious discussion a few weeks ago? If so, forgive my intrusion.
Just in case you would like information on characteristics of various Advance Design years, this information on the Chevy Duty site might be helpful.
http://www.chevyduty.com/frame-truck-years.html Best wishes,
Tim