Big truck fenders are only available from other truck guys or junk yards, you have to get out there and look for them. Place a PARTS WANTED ad here on the Stovebolt in the Swap Meet area, you never know what someone might have laying around.
More that likely you will have to engineer everything your self to get your end results, there are no hot rod parts for the BIG trucks. Like Ken said, it might be easier to start with a 1-ton truck to get the correct fender wheel openings and lower stance. Or find a modern 1-ton and swap everything over.
Mike B
