Hydroboost is probably the best option overall.

If you do a vacuum pump, a 2011-2016 Cruze should be an easy one to find, has a nice isolated bracket that should be easy to retrofit onto a different vehicle. It's located on the driver's side framerail near the bottom. You can grab a check valve, vacuum switch, etc all from the same car that should get you where you need to go.

I believe all of them with the 1.4L Turbo and an automatic have one.

cruzevacuumpump.jpg

'70 Duster 470hp 340/T56 Magnum/8 3/4 3.23 Sure-Grip