I would like a description of stamps found on your 1973 to 1982 aluminum wheels and photos if possible. It is useful but not necessary if you can link the wheels stamps to a vin# and build date. The flange height is measured by placing a straight edge across the inner and outer flange and measuring to the tire bead seat. The likely measurement will be approximately .68 inch, .77 inch, or .85 inch flange height