Swapping a quadrejet for the same model quadrajet, snag, please help!

[Cw72gmc]

While I was at a pick and pull here in Utah today, a 71 Gmc was dropped that had been rear ended pretty bad. The original qjet was on it and is in pretty good shape. I hurried to it and pulled the carb. It is Identical to my carb but there are a few things I need advice on

Brake Booster: I think I'm ok on this, I have power brakes, the carb I bought has a plug in the back, take the plug out and use my adapter to tie in the brake booster, Right?

On my carb there is a nipple on the driver side above the idle mixture screw that a vacuum line runs to the distributor, on the carb I bought the nipple is missing. Can I gently take the one out of my old carb and pop it in? I also have a vacuum line coming off the passenger side that has always just went to a plug in the air filter housing, could I use that one for my distributor ?

My secondary linkage broke while moving it from carb to carb, I plan on bending one from piano wire to get by, Is there any trick for removing the choke linkage for the divorced choke?

Anything else I should know when swapping?

I have the new carb on, and have fired it up with just the vacuum to it and I can tell it is well tuned, my truck is a 350 4spd manual, does anyone have a vacuum diagram? Thank you all so much!! Happy Trucking!!!