I just removed a driver side mount from a 67 c-body 440/727 I drug home this weekend.
the driver side mount had 2 short bolts and 1 long bolt through the support tube welded to mount.
no block lug. nut on long bolt is close to backside of oil pump on driver side. tube/long bolt supports mount from twisting as engine lifts from torque.
they seem to be they same as in the pics.
free if someone needs a set.
I'm going to build some out of flat stock, also doing the big block truck brackets. I could use a set to make a pattern from. I'll send them back to you when I'm finished. Or sent them on to someone that needs them if you want.
