the purpose of the f-50 style vents is not to put air into the intake, in fact they create a vacum.... they work like a wing, the air flowing over the vents is moving faster than the air on the other side, so it sucks air out of the engine bay... with proper placement f50 style gaps produce a wicked suction effect that's awesome for your radiator..
running tubing to your intake would be stupid as you'd just create a vacum and your engine would have trouble getting air at high speeds...
