'47 and up seems to be what most of those joints sell parts for.. so I don't have much occasion to shop with them.. since what they DO have that I can use is too dang expensive.
LMC has a beautiful catalog, and their exploded views of trucks is quite helpful.. but if I was ever going to order new parts, i'd do it from American Classic, just because they help support this board.. which has been far more helpful to me than any retail operation.