That first "OUCH" is the Camaro I was thinking of smile

Fortunately with a leaf-spring suspension, the entire rear can't come out of the car if the perches break off.
But it could spin in the U-bolts... break the rear U-joint and probably the pinion & case, beat the #$% out of the floor pan, possibly damage the four-speed. shock
So I'm glad I found it now, rather than on a hard launch someday!