cb750a air box question

[77cb750a]

I just bought a 1977 cb750a and I need to find out where the vacuum line off the carb goes.  There is a little hole in the air box on left hand side that looks like it might go there.  Also, does anyone know where I can find the collar or nut for the 2 piece air box. I also need to find out where I can get the breather tube for the top of the air box. ( looks like a "s".)

Thanks,
Tim

[Shiftless]

I'm an owner of a '78 ... just wanted to give ya a hello, and since you asked this question a long time ago, I hope you found the answer. =D

I'm having my own airbox issue of my own ... one of the previous owners made the 2-piece airbox into a 1-piece airbox. I don't see any way in except through the top, under the fuel tank. Your thoughts ...?