got the hd parts catalog from guernsey hd but they went bust in jan this year
but im sure jersey hd would be able to get them but thats only good if your in the uk
they are also available through zodiac dealers i found the correct catalogue in the zodiac book then cross referenced the zodiac part no to the hd part no and found hd to be cheeper so bought there
but as i dont know where you are dont know if uk specific advice is any good to you
but your nearest hd dealer should be able to help you out
Brian