On Fri, 04 Jun 2004 07:04:00 GMT, Erik wrote:
For what it's worth, I think Chrysler did this well into the 60's at
least, and with lug nuts and studs as well.

Up through at least 1967. I had a 1967 Dodge van with LH and RH
lugnuts. OTOH, my 1970 Dodge had all RH lugnuts. So the change
happened sometime between those two models.

Gary