Upper control arm bushes

Okay, about to start the rebuild and swap of suspension parts from the '73 dart to the '71 dart. I've been looking at the upper control arms and see that both cars the bushing look like they are only 3/4ths of the way in. What I mean by that is that the bushing has the large collar sticking out. Instead of being flush with the control arm then are out probably a good 1/4 inch. This is the same on both cars.

Is it supposed to fit in flush with the control arm each side? Seems like the operate well enough out about 1/4, but I want to make sure I put the new ones in correctly.

Cheers