How about a Tri-carb (no affiliation):
http://cgi.ebay.com/ebaymotors/1962-Austin-Healey-3000-Mark-II-BT7-Roadster-Tri-Carb_W0QQitemZ150205639264QQcmdZViewItem?hash=item150205639264
http://i34.photobucket.com/albums/d106/jculpjr/goldenbeigemetallicrunningreduced.jpg