318 draw through build

This is a cool build. I know there was some kind of draw thru set up for 440 mobile homes that used the Rayjay turbo. No idea what size that was, but it is very similar to this.

My question is do you need to build any kind of dam in the floor of the intake? Seems like the forced air/fuel mix would blow across the floor and mainly get sucked down one side of the intake causing a lean condition on the opposite side. Is that even an issue? I know, I'm thinking too much.