To be honest neither one looks exactly like the ones in the REAR of my '72, now the top one is closest if any....the end bolting to the bumper is more of a 90* bend in there.....from the pix, as shown....
on my front, the top one again, looks most similar, but they are not interchangable of course.... the front one has a U shaped piece of 1/4 inch steel in there with two bolts that allow that odd shapes to align in some fashion when messed with enough....
I can go look again if needed, doing work on it anyway, so no sweat....
:hi: