[Hoss056]

I'd don't know that I would be crazy about the idea of introducing a possible failure point into my ability to stop the car.

 

[GreenMachine15]

I would not be afraid to do it. Just make sure to zip tie or clamp connections so nothing can vibrate apart, even if they are barbed.

 

[Hoss056]

It's not a bad connection under the hood that worries me. It's a aftermarket valve or hose failure or hose under the car taking damage. That happens and power assist is gone.

 

[Sarna March]

But, aren't the brakes also somewhat pump-actuated?
To prevent excessive vacuum leakage, you can just put a very small orifice somewhere on the fitting at the booster can to the rear of the car can get vacuum, but it won't hemmorhage vacuum in the case of an undercar mishap. You can add a small vacuum reservoir near the rear of the car to "store up" some vacuum, also.

 

[Hoss056]

A one way check valve would be the way to go.