here is link for screwdrivers
http://www.classicparts.com/searchprods.aspProbably not what your looking for but it'll get you started.
http://www.oldchevytrucks.com/cart/index.asp?cat2=9630&path=1947+%2D+Early+1955+Truck+Parts%2FCab+Related+Parts%2FMiscellaneous+Cab+Items&station=
I remember a vendor having a "set" for the interior and also carried the clutch heads for the rear fenders. If this don't help try some other vendors......I mean heck, they sell the drivers so why not the screws/bolts ??