If I'm not mistaken, The Sandwhich Shoppe sells camless reflectors they you can get custom reamed to accommodate the 64623 Bulb.
LINK HERE to the Modamag page. Reflector listing are found for both SMO and MOP. I dont' think you can throw a 623 with that small a reflector so I'd go MOP.
LINK HERE to the Modamag page. Reflector listing are found for both SMO and MOP. I dont' think you can throw a 623 with that small a reflector so I'd go MOP.