I'm gonna try this one more time......
In these pics, I used an arrow to point at the rubber fitting. THIS IS REMOVABLE. Simply take it off, and attach a vacuum HOSE that is available at all part stores. YOU DO NOT have to find and hunt up this "special plastic tubing" that you keep seeking out. There is a hose barb under those rubber ends and I swear to God that vacuum line hose will fit it.
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