Jay 'Lugnutz' had a set of those he presented to 'Hot Rod Lincoln' a couple years ago in Tennessee.
If any one could make one of these bolts work ,,it would be Jay. Jay gave me lots of tips when I rebuilt my T-5 Transmission I installed in my 39 .. He has a couple real nice Old Chevy Trucks 65's I think ,, I know he belongs to this site ,, just dont see him on but rarely ..curious to know more about the set of bolts mentioned here and how he go them,, maybe he made them ??