http://cgi.ebay.com/ebaymotors/NOS-1955-1956-1957-FORD-TBIRD-carb-bowl-supercharger_W0QQitemZ310204310395QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item48399e237b
I just sold a used one for wwwaaaayyyy less than that, and it had all the press-in brass calibration orifices and fuel delivery tubes that this one seems to be missing. And I don't regret it either.