Holley 1920 missing parts - time to swap?

I'm able to idle, but it's cutting out when I coast or sometimes just AFTER an idle. There are some similar threads on here that I'll be looking at to troubleshoot it when we get this or another carb back on. This was something that needed to be done, regardless.

We noticed the fuel filter was full of crap, too, so we're going to test with a new one, and if the gunk was the problem we'll clean out the lines and replace the tank.