Thanks. That's the same unit I will be installing.
In my case, I have to use a pump. It is difficult at best to get sufficient vacuum for the brake booster from my 8 stack individual runner throttle bodies. The car came with a vacuum pump that is plumbed and installed, but it is old technology, loud, and shakes the car a little. I pulled its fuse. My understanding is that the Leed pump is relatively quiet and smooth, kind of like an electric pump.