OK, thanks for the replies. I'll try to locate a sealed beam unit to test the fit. The problem with the aftermarket dealers around here is they want to know the year, make and model of the vehicle ... which I don't really have. So, they usually throw up their hands and say, "Sorry, can't help you if you can't tell me the make, model and year". They can't look it up in their computerized catalogues otherwise. Seems the old days of finding a parts guy who can help are long gone.
If I succeed, I'll post my experiences.