[spacemanspif]

On my Saturn I cometely blocked the front end and converted it to bottom breathing using an air dam mounted directly under the radiator. It served the double purpose of cooling the rad and as a dam, blocking some air from going under the car. I'm not sure how the Ka is laid out but it might be worth 6ft of lawn edging. Adding another rad defeats the purpose of the block because you are adding weight and complication that is unnecessary when the problem could be solved by just blocking off less area.