I thought so too. Thank you.

I would consider selling it, if anyone is looking for one.

Is this correct only for an L78 car (1969 and 1970) or other applications as well?

All 1969 & 1970 big block Chevelles & Elcaminos that came with a 3 row radiator from the factory used this un-shaved fan shroud...Horsepower & Transmission had nothing to do with it.
Small blocks & Heavy Duty 4 row radiators in same cars during that time,used different numbered fan shrouds or were shaved.