Question: Do you know how the vacuum hoses route, and what they go to, how it works in the big scheme of things, and any implications as how the car will react if you just start plugging things off?
Can't speak for where you live, but in some places, even though you may not have to have an emissions test, they have emissions visual inspections. So if stuff ain't there, you ain't passing.
If you don't have that problem (at least not yet) then no worries, but I'd at least understand the systems that are being removed and how to do it properly without adverse effects to the car.
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