Clutch rod identification

[novab]

I am looking for an accurate answer here on a clutch push rod for a 68-72 Nova with a big block. Different sources online have these rods listed differently. I would like to know who is correct. Photo 1 is listed for a big block and photo 2 is listed for a small block. Like I said some sources online have them the opposite.

http://www.yenko.net/ubbthreads/pics/usergals/2016/03/full-7759-40599-20160312_190858.jpg
http://www.yenko.net/ubbthreads/pics/usergals/2016/03/full-7759-40600-20160312_190914.jpg

[marxjunk]

i recognize the lower one as small block just about everything..never seen the top...but never had a real BB nova either

[Mr.Nickey Nova]

Top one is for a big block and the lower for a small block.