What to do what to do?

[Telecasterjoey]

So here's my situation. I've got a tired 305 in my truck and I wanna spruce it up. I'd like to just get it running well enough to put the truck on the road for now. most of my vacuum hoses are either missing or hooked up wrong. I'd like to delete the emissions stuff and just run the bare minimum for vac hoses. So question 1: where would I hook up the vacuum hose that goes to the distributer? (pic 1 shows the hose on the distributor) and where does the vacuum suction come from? it says in my manual that the stock breather has a vacuum motor, but when I look at motors on the forum most people don't use the stock breather.
Also I read that the transmission needs a vacuum line to shift?
I have a few pics of sensors or vacuum switches that I'm lost as to what they do!

And another option I have is swapping the motor for a strong running 350 out of a 72 buick skylark, but I was told by the guy selling it that it wont fit. Does anyone know if it will? I'd assume a gm 350 would just bolt right in. I know you guys will have the answers though!

So what are your thoughts, if the buick 350 fits should i do it? or just get my 305 running?

all input is appreciated!