[P.J.]

Yes Peter
There is a difference in the 619 brackets for the L78 VS the Ls6 brackets. In the reaserch I did a year ago I found out after looking at about 15 cars that were origional cars documented that the bracket on the right of the 3 brackets
is the L78 bracket. And the 2 on the left are ls6 cars.
I did not find any l78 cars with the ls6 bracket.I dont know why the brackets are differnt with the same part number
As you can see some numbers are deeper than others,thats because
the die that struck the brackets were sharpened and the
bump lock on the die was not ground the same amount to offset the new die punch heigth.The differnce is in the locking tab area.
I am including a pic of the real L78 bracket for the 70 chevelle.
Peter