Newbie- Question

[Ruckus]

Hi everyone.

I'd been looking for a truck to restore for over a year....finally bought one about a month ago. It's a 70 cst lwb. I wanted one I could drive home and around town while I fixed it up. I've been replacing more critical items so far and while underneath it replacing a leaking trans. pan and gasket, saw what I think is the center support bearing broken. It looks like it was replaced not all that long ago (cleaner looking). My questions are: It wasn't broken when I got it, so should I replace it now- I still haven't filled the trans yet, if that makes it easier; and can I get this at an auto parts store, or from the likes of lmc (about 30 min. away). The truck isn't my d.d., so that's not a problem. Thanks for any advice. Here's a pic