Try the search button. R u building a a 40's style Merc? And why those years? 39/40 pretty much the same (though different grill, dash, window frames, taillights, headlights). 41/42 same deal, same body with different stuff here and there and you could add the 46-48 too. Try this link: http://www.jalopyjournal.com/forum/showthread.php?t=44958&&showall=1 Ken