That's what I found out.  The uppers are from an old VW Bettle and the lowers are stock.  I ordered new lowers, but found out I can't use them for what I'm doing.  I'm putting 400ex spindles and hubs on my 250.  I should have ordered 400ex lower ball joints.  The uppers that I ordered, I was sent left-handed threaded ball joints by mistake.  Got 4 new ball joints and can't use a one of them lol.