1981 chassis
From no 5 crossmember bracket tapers full depth of chassis at back
3 1/2 inches at top
3 1/4 inches at bottom
At front is only 1 1/4 deep.
And is 7 7/8 from crossmember.
Bracket flat is 1 1/2 inches from chassis
Bracket depth is 3 1/4 inches
Two steel dowels protrude in...