Which case do you need, wire wheel or disc? A fellow MG nut here in KC has two disc housings that I know of, saw them at the swap meet last weekend, but both are disc wheel type. He might have others, I'd have to check. I realize shipping from KC to New York would be a few bucks, but if you really need one I'll try to get you in touch.
'73 Midget (V6)
'59 MGA (I6) under construction
'73 Lotus Europa
'52 MG TD kit car body project.
'98 Jag XK8
"There is a fine line between a hobby and mental illness"