Awesome A-body air dam for under $30!

Yeah, I meant the '64 on the first page. I want to grab air not dam it off. Or would that make the air flow worse into the radiator, i.e. go against the flow coming through the grill? if they are additive flows, then that's what I want to do...I had made a homemade one years ago out of aluminum... That one on the '64 dart appears to be just what I'm looking for on my '67 dart, mount it to the base of the radiator support to force air through the radiator. Anyone done that? Pics? Stories?